Merge pull request #7 from jorgenhenrichsen/dev

Dev

Example/Pods/Pods.xcodeproj/project.pbxproj

@@ -7,11 +7,15 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		070713052067E3EA00F789B3 /* APError.swift in Sources */ = {isa = PBXBuildFile; fileRef = 070713042067E3EA00F789B3 /* APError.swift */; };
 		0773265A205ED6C400C4D1CD /* AVPlayerObserver.swift in Sources */ = {isa = PBXBuildFile; fileRef = 07732657205ED6C400C4D1CD /* AVPlayerObserver.swift */; };
 		0773265B205ED6C400C4D1CD /* AVPlayerItemNotificationObserver.swift in Sources */ = {isa = PBXBuildFile; fileRef = 07732658205ED6C400C4D1CD /* AVPlayerItemNotificationObserver.swift */; };
 		0773265C205ED6C400C4D1CD /* AVPlayerTimeObserver.swift in Sources */ = {isa = PBXBuildFile; fileRef = 07732659205ED6C400C4D1CD /* AVPlayerTimeObserver.swift */; };
 		07732660205ED7BF00C4D1CD /* AudioItem.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0773265F205ED7BF00C4D1CD /* AudioItem.swift */; };
 		0775574B2061C1820002C6A1 /* RemoteCommand.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0775574A2061C1820002C6A1 /* RemoteCommand.swift */; };
+		077557572066867F0002C6A1 /* QueueManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 077557562066867F0002C6A1 /* QueueManager.swift */; };
+		0775575D2066A7DB0002C6A1 /* SimpleAudioPlayer.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0775575C2066A7DB0002C6A1 /* SimpleAudioPlayer.swift */; };
+		077557612066ABAD0002C6A1 /* QueuedAudioPlayer.swift in Sources */ = {isa = PBXBuildFile; fileRef = 077557602066ABAD0002C6A1 /* QueuedAudioPlayer.swift */; };
 		07F41B1A205FC0B100E25749 /* AudioSessionController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 07F41B19205FC0B100E25749 /* AudioSessionController.swift */; };
 		07F41B2220614BDC00E25749 /* RemoteCommandController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 07F41B2120614BDC00E25749 /* RemoteCommandController.swift */; };
 		0A2CA8B0DD7E300ABFCF1956E6B58248 /* Nimble.h in Headers */ = {isa = PBXBuildFile; fileRef = 2727DBDF3F41A52F002F6B1992165881 /* Nimble.h */; settings = {ATTRIBUTES = (Public, ); }; };
@@ -168,11 +172,15 @@
 		0136A629F86E79FA6B68D9675E08D0AF /* Pods-SwiftAudio_Example-resources.sh */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.script.sh; path = "Pods-SwiftAudio_Example-resources.sh"; sourceTree = "<group>"; };
 		014CC71E572C5CC14ADFA82A8B7B97DC /* Expression.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; name = Expression.swift; path = Sources/Nimble/Expression.swift; sourceTree = "<group>"; };
 		057B1682EF92E71137867F0C259AF2CC /* NSString+C99ExtendedIdentifier.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; name = "NSString+C99ExtendedIdentifier.swift"; path = "Sources/Quick/NSString+C99ExtendedIdentifier.swift"; sourceTree = "<group>"; };
+		070713042067E3EA00F789B3 /* APError.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = APError.swift; path = SwiftAudio/Classes/APError.swift; sourceTree = "<group>"; };
 		07732657205ED6C400C4D1CD /* AVPlayerObserver.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AVPlayerObserver.swift; sourceTree = "<group>"; };
 		07732658205ED6C400C4D1CD /* AVPlayerItemNotificationObserver.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AVPlayerItemNotificationObserver.swift; sourceTree = "<group>"; };
 		07732659205ED6C400C4D1CD /* AVPlayerTimeObserver.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AVPlayerTimeObserver.swift; sourceTree = "<group>"; };
 		0773265F205ED7BF00C4D1CD /* AudioItem.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = AudioItem.swift; path = SwiftAudio/Classes/AudioItem.swift; sourceTree = "<group>"; };
 		0775574A2061C1820002C6A1 /* RemoteCommand.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = RemoteCommand.swift; path = SwiftAudio/Classes/RemoteCommand.swift; sourceTree = "<group>"; };
+		077557562066867F0002C6A1 /* QueueManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = QueueManager.swift; path = SwiftAudio/Classes/QueueManager.swift; sourceTree = "<group>"; };
+		0775575C2066A7DB0002C6A1 /* SimpleAudioPlayer.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = SimpleAudioPlayer.swift; path = SwiftAudio/Classes/SimpleAudioPlayer.swift; sourceTree = "<group>"; };
+		077557602066ABAD0002C6A1 /* QueuedAudioPlayer.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = QueuedAudioPlayer.swift; path = SwiftAudio/Classes/QueuedAudioPlayer.swift; sourceTree = "<group>"; };
 		07F41B19205FC0B100E25749 /* AudioSessionController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = AudioSessionController.swift; path = SwiftAudio/Classes/AudioSessionController.swift; sourceTree = "<group>"; };
 		07F41B2120614BDC00E25749 /* RemoteCommandController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = RemoteCommandController.swift; path = SwiftAudio/Classes/RemoteCommandController.swift; sourceTree = "<group>"; };
 		0A9D7EA20C39A55A1EF0C23094895A75 /* Quick-dummy.m */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.c.objc; path = "Quick-dummy.m"; sourceTree = "<group>"; };
@@ -388,6 +396,8 @@
 			isa = PBXGroup;
 			children = (
 				E469FE2F4CBA2182A64C31D9B41A936E /* AudioPlayer.swift */,
+				0775575C2066A7DB0002C6A1 /* SimpleAudioPlayer.swift */,
+				077557602066ABAD0002C6A1 /* QueuedAudioPlayer.swift */,
 				0773265F205ED7BF00C4D1CD /* AudioItem.swift */,
 				C455E233BD4071A35296FEDA8D99CEDE /* MediaItemProperty.swift */,
 				32A658905B9E84D827AA64605F28E3F9 /* NowPlayingInfoController.swift */,
@@ -396,6 +406,8 @@
 				07F41B19205FC0B100E25749 /* AudioSessionController.swift */,
 				07F41B2120614BDC00E25749 /* RemoteCommandController.swift */,
 				0775574A2061C1820002C6A1 /* RemoteCommand.swift */,
+				077557562066867F0002C6A1 /* QueueManager.swift */,
+				070713042067E3EA00F789B3 /* APError.swift */,
 				07732656205ED6C400C4D1CD /* Observer */,
 				25961FA3FF989AFD1E08A55F4E464276 /* AVPlayerWrapper */,
 				853A8C0AF6F0B4902930084E06DEA640 /* Support Files */,
@@ -981,6 +993,8 @@
 				0773265C205ED6C400C4D1CD /* AVPlayerTimeObserver.swift in Sources */,
 				07F41B1A205FC0B100E25749 /* AudioSessionController.swift in Sources */,
 				A1A245A1D2A54FF00AACE521F153D281 /* AudioPlayer.swift in Sources */,
+				0775575D2066A7DB0002C6A1 /* SimpleAudioPlayer.swift in Sources */,
+				077557572066867F0002C6A1 /* QueueManager.swift in Sources */,
 				C525C159B05D6FEEE0FC3D16910C934B /* AVPlayerWrapper.swift in Sources */,
 				C226CFBDCE851BDA9CD1DA26894BF272 /* AVPlayerWrapperState.swift in Sources */,
 				5E48B05B2B78E0AD05E2DBA8B1862AE5 /* MediaItemProperty.swift in Sources */,
@@ -988,10 +1002,12 @@
 				FCE55A287889D68B475EBFBE8AB26E4B /* NowPlayingInfoController.swift in Sources */,
 				0775574B2061C1820002C6A1 /* RemoteCommand.swift in Sources */,
 				07732660205ED7BF00C4D1CD /* AudioItem.swift in Sources */,
+				070713052067E3EA00F789B3 /* APError.swift in Sources */,
 				07F41B2220614BDC00E25749 /* RemoteCommandController.swift in Sources */,
 				6E0C5034AB99CC7E6B0BF002D488D85D /* NowPlayingInfoProperty.swift in Sources */,
 				A45D4CA6BC297DB896B20F391DF60D61 /* SwiftAudio-dummy.m in Sources */,
 				0773265B205ED6C400C4D1CD /* AVPlayerItemNotificationObserver.swift in Sources */,
+				077557612066ABAD0002C6A1 /* QueuedAudioPlayer.swift in Sources */,
 				8577EFB55077C469A41CFFBB5C749995 /* TimeEventFrequency.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;

Example/SwiftAudio.xcodeproj/project.pbxproj

@@ -8,6 +8,11 @@
 
 /* Begin PBXBuildFile section */
 		02EAB7FA622CF9CCD4F328C7 /* Pods_SwiftAudio_Tests.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C9CEE0D1B64E6BEF775F214D /* Pods_SwiftAudio_Tests.framework */; };
+		070713072067EB4F00F789B3 /* Double + Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = 070713062067EB4F00F789B3 /* Double + Extensions.swift */; };
+		070713092067EFFB00F789B3 /* AudioController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 070713082067EFFB00F789B3 /* AudioController.swift */; };
+		0707130B2067F2E000F789B3 /* QueueViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0707130A2067F2E000F789B3 /* QueueViewController.swift */; };
+		0707130F2067F40A00F789B3 /* QueueTableViewCell.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0707130D2067F40A00F789B3 /* QueueTableViewCell.swift */; };
+		070713102067F40A00F789B3 /* QueueTableViewCell.xib in Resources */ = {isa = PBXBuildFile; fileRef = 0707130E2067F40A00F789B3 /* QueueTableViewCell.xib */; };
 		074A6483205C155E0083D868 /* AVPlayerTimeObserverTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 074A6482205C155E0083D868 /* AVPlayerTimeObserverTests.swift */; };
 		074A6485205C29920083D868 /* AVPlayerItemNotificationObserverTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 074A6484205C29920083D868 /* AVPlayerItemNotificationObserverTests.swift */; };
 		074A6487205E59B60083D868 /* AVPlayerWrapperTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 074A6486205E59B60083D868 /* AVPlayerWrapperTests.swift */; };
@@ -15,6 +20,7 @@
 		07732653205EB1B500C4D1CD /* nasa_throttle_up.mp3 in Resources */ = {isa = PBXBuildFile; fileRef = 07732652205EB1B500C4D1CD /* nasa_throttle_up.mp3 */; };
 		07732654205ECA8B00C4D1CD /* WAV-MP3.wav in Resources */ = {isa = PBXBuildFile; fileRef = 07732650205EACA300C4D1CD /* WAV-MP3.wav */; };
 		07732655205ECE1C00C4D1CD /* nasa_throttle_up.mp3 in Resources */ = {isa = PBXBuildFile; fileRef = 07732652205EB1B500C4D1CD /* nasa_throttle_up.mp3 */; };
+		0775575920668B020002C6A1 /* QueueManagerTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0775575820668B020002C6A1 /* QueueManagerTests.swift */; };
 		607FACD61AFB9204008FA782 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 607FACD51AFB9204008FA782 /* AppDelegate.swift */; };
 		607FACD81AFB9204008FA782 /* ViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 607FACD71AFB9204008FA782 /* ViewController.swift */; };
 		607FACDB1AFB9204008FA782 /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 607FACD91AFB9204008FA782 /* Main.storyboard */; };
@@ -35,11 +41,17 @@
 /* End PBXContainerItemProxy section */
 
 /* Begin PBXFileReference section */
+		070713062067EB4F00F789B3 /* Double + Extensions.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Double + Extensions.swift"; sourceTree = "<group>"; };
+		070713082067EFFB00F789B3 /* AudioController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AudioController.swift; sourceTree = "<group>"; };
+		0707130A2067F2E000F789B3 /* QueueViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = QueueViewController.swift; sourceTree = "<group>"; };
+		0707130D2067F40A00F789B3 /* QueueTableViewCell.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = QueueTableViewCell.swift; sourceTree = "<group>"; };
+		0707130E2067F40A00F789B3 /* QueueTableViewCell.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = QueueTableViewCell.xib; sourceTree = "<group>"; };
 		074A6482205C155E0083D868 /* AVPlayerTimeObserverTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AVPlayerTimeObserverTests.swift; sourceTree = "<group>"; };
 		074A6484205C29920083D868 /* AVPlayerItemNotificationObserverTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AVPlayerItemNotificationObserverTests.swift; sourceTree = "<group>"; };
 		074A6486205E59B60083D868 /* AVPlayerWrapperTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AVPlayerWrapperTests.swift; sourceTree = "<group>"; };
 		07732650205EACA300C4D1CD /* WAV-MP3.wav */ = {isa = PBXFileReference; lastKnownFileType = audio.wav; path = "WAV-MP3.wav"; sourceTree = "<group>"; };
 		07732652205EB1B500C4D1CD /* nasa_throttle_up.mp3 */ = {isa = PBXFileReference; lastKnownFileType = audio.mp3; path = nasa_throttle_up.mp3; sourceTree = "<group>"; };
+		0775575820668B020002C6A1 /* QueueManagerTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = QueueManagerTests.swift; sourceTree = "<group>"; };
 		521F3AEC1228A2FA2637355F /* Pods-SwiftAudio_Tests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-SwiftAudio_Tests.debug.xcconfig"; path = "Pods/Target Support Files/Pods-SwiftAudio_Tests/Pods-SwiftAudio_Tests.debug.xcconfig"; sourceTree = "<group>"; };
 		607FACD01AFB9204008FA782 /* SwiftAudio_Example.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = SwiftAudio_Example.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		607FACD41AFB9204008FA782 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
@@ -106,7 +118,12 @@
 			isa = PBXGroup;
 			children = (
 				607FACD51AFB9204008FA782 /* AppDelegate.swift */,
+				070713082067EFFB00F789B3 /* AudioController.swift */,
 				607FACD71AFB9204008FA782 /* ViewController.swift */,
+				0707130A2067F2E000F789B3 /* QueueViewController.swift */,
+				070713062067EB4F00F789B3 /* Double + Extensions.swift */,
+				0707130D2067F40A00F789B3 /* QueueTableViewCell.swift */,
+				0707130E2067F40A00F789B3 /* QueueTableViewCell.xib */,
 				607FACD91AFB9204008FA782 /* Main.storyboard */,
 				607FACDC1AFB9204008FA782 /* Images.xcassets */,
 				607FACDE1AFB9204008FA782 /* LaunchScreen.xib */,
@@ -131,6 +148,7 @@
 				074A6482205C155E0083D868 /* AVPlayerTimeObserverTests.swift */,
 				074A6484205C29920083D868 /* AVPlayerItemNotificationObserverTests.swift */,
 				074A6486205E59B60083D868 /* AVPlayerWrapperTests.swift */,
+				0775575820668B020002C6A1 /* QueueManagerTests.swift */,
 				07732650205EACA300C4D1CD /* WAV-MP3.wav */,
 				07732652205EB1B500C4D1CD /* nasa_throttle_up.mp3 */,
 				607FACE91AFB9204008FA782 /* Supporting Files */,
@@ -275,6 +293,7 @@
 				607FACDB1AFB9204008FA782 /* Main.storyboard in Resources */,
 				607FACE01AFB9204008FA782 /* LaunchScreen.xib in Resources */,
 				07732655205ECE1C00C4D1CD /* nasa_throttle_up.mp3 in Resources */,
+				070713102067F40A00F789B3 /* QueueTableViewCell.xib in Resources */,
 				07732654205ECA8B00C4D1CD /* WAV-MP3.wav in Resources */,
 				607FACDD1AFB9204008FA782 /* Images.xcassets in Resources */,
 			);
@@ -403,7 +422,11 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				0707130B2067F2E000F789B3 /* QueueViewController.swift in Sources */,
+				070713072067EB4F00F789B3 /* Double + Extensions.swift in Sources */,
 				607FACD81AFB9204008FA782 /* ViewController.swift in Sources */,
+				0707130F2067F40A00F789B3 /* QueueTableViewCell.swift in Sources */,
+				070713092067EFFB00F789B3 /* AudioController.swift in Sources */,
 				607FACD61AFB9204008FA782 /* AppDelegate.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -412,6 +435,7 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				0775575920668B020002C6A1 /* QueueManagerTests.swift in Sources */,
 				074A6483205C155E0083D868 /* AVPlayerTimeObserverTests.swift in Sources */,
 				074A6485205C29920083D868 /* AVPlayerItemNotificationObserverTests.swift in Sources */,
 				607FACEC1AFB9204008FA782 /* AVPlayerObserverTests.swift in Sources */,

Example/SwiftAudio/AudioController.swift

@@ -0,0 +1,39 @@
+//
+//  AudioController.swift
+//  SwiftAudio_Example
+//
+//  Created by Jørgen Henrichsen on 25/03/2018.
+//  Copyright © 2018 CocoaPods. All rights reserved.
+//
+
+import Foundation
+import SwiftAudio
+
+
+class AudioController {
+    
+    static let shared = AudioController()
+    let player = QueuedAudioPlayer()
+    let audioSessionController = AudioSessionController.shared
+    
+    let sources: [AudioItem] = [
+        DefaultAudioItem(audioUrl: "https://p.scdn.co/mp3-preview/67b51d90ffddd6bb3f095059997021b589845f81?cid=d8a5ed958d274c2e8ee717e6a4b0971d", artist: "Bon Iver", title: "33 \"GOD\"", albumTitle: "22, A Million", sourceType: .stream, artwork: #imageLiteral(resourceName: "22AMI")),
+        DefaultAudioItem(audioUrl: "https://p.scdn.co/mp3-preview/081447adc23dad4f79ba4f1082615d1c56edf5e1?cid=d8a5ed958d274c2e8ee717e6a4b0971d", artist: "Bon Iver", title: "8 (circle)", albumTitle: "22, A Million", sourceType: .stream, artwork: #imageLiteral(resourceName: "22AMI")),
+        DefaultAudioItem(audioUrl: "https://p.scdn.co/mp3-preview/6f9999d909b017eabef97234dd7a206355720d9d?cid=d8a5ed958d274c2e8ee717e6a4b0971d", artist: "Bon Iver", title: "715 - CRΣΣKS", albumTitle: "22, A Million", sourceType: .stream, artwork: #imageLiteral(resourceName: "22AMI")),
+        DefaultAudioItem(audioUrl: "https://p.scdn.co/mp3-preview/bf9bdd403c67fdbe06a582e7b292487c8cfd1f7e?cid=d8a5ed958d274c2e8ee717e6a4b0971d", artist: "Bon Iver", title: "____45_____", albumTitle: "22, A Million", sourceType: .stream, artwork: #imageLiteral(resourceName: "22AMI"))
+    ]
+    
+    init() {
+        player.remoteCommands = [
+            .stop,
+            .togglePlayPause,
+            .skipForward(preferredIntervals: [30]),
+            .skipBackward(preferredIntervals: [30]),
+            .changePlaybackPosition
+        ]
+        try? audioSessionController.set(category: .playback)
+        try? audioSessionController.activateSession()
+        try? player.add(items: sources, playWhenReady: false)
+    }
+    
+}

Example/SwiftAudio/Base.lproj/Main.storyboard

@@ -22,64 +22,173 @@
                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
                         <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
                         <subviews>
-                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="ExO-ir-bnt">
-                                <rect key="frame" x="168" y="20" width="38" height="30"/>
-                                <state key="normal" title="PlayA"/>
+                            <stackView opaque="NO" contentMode="scaleToFill" distribution="fillEqually" translatesAutoresizingMaskIntoConstraints="NO" id="RX3-VR-CL6">
+                                <rect key="frame" x="32" y="533" width="311" height="34"/>
+                                <subviews>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="9Q1-U9-TUC">
+                                        <rect key="frame" x="0.0" y="0.0" width="103.5" height="34"/>
+                                        <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                        <state key="normal" title="Prev"/>
+                                        <connections>
+                                            <action selector="previous:" destination="vXZ-lx-hvc" eventType="touchUpInside" id="fFb-iW-sFr"/>
+                                        </connections>
+                                    </button>
+                                    <button opaque="NO" contentMode="scaleToFill" horizontalCompressionResistancePriority="751" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="EOo-zV-6l2">
+                                        <rect key="frame" x="103.5" y="0.0" width="104" height="34"/>
+                                        <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="18"/>
+                                        <state key="normal" title="Play"/>
+                                        <connections>
+                                            <action selector="togglePlay:" destination="vXZ-lx-hvc" eventType="touchUpInside" id="oYu-xi-n6T"/>
+                                        </connections>
+                                    </button>
+                                    <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="Nhf-qB-91A">
+                                        <rect key="frame" x="207.5" y="0.0" width="103.5" height="34"/>
+                                        <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                        <state key="normal" title="Next"/>
+                                        <connections>
+                                            <action selector="next:" destination="vXZ-lx-hvc" eventType="touchUpInside" id="Tha-3J-gVM"/>
+                                        </connections>
+                                    </button>
+                                </subviews>
+                                <constraints>
+                                    <constraint firstAttribute="height" constant="34" id="T4q-HG-vqM"/>
+                                </constraints>
+                            </stackView>
+                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="l9B-hM-Ajc">
+                                <rect key="frame" x="302" y="20" width="57" height="34"/>
+                                <fontDescription key="fontDescription" type="boldSystem" pointSize="18"/>
+                                <state key="normal" title="Queue"/>
                                 <connections>
-                                    <action selector="playA:" destination="vXZ-lx-hvc" eventType="touchUpInside" id="KZw-pL-C6H"/>
+                                    <segue destination="vDz-qW-uY8" kind="presentation" identifier="QueueSegue" id="eke-1c-Fsm"/>
                                 </connections>
                             </button>
-                            <slider opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" value="0.5" minValue="0.0" maxValue="1" translatesAutoresizingMaskIntoConstraints="NO" id="RWN-If-dGG">
-                                <rect key="frame" x="14" y="318.5" width="347" height="31"/>
+                            <imageView userInteractionEnabled="NO" contentMode="scaleToFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" translatesAutoresizingMaskIntoConstraints="NO" id="FCd-3e-22D">
+                                <rect key="frame" x="67" y="84" width="240" height="240"/>
                                 <constraints>
-                                    <constraint firstAttribute="width" constant="343" id="CD7-DZ-gUR"/>
+                                    <constraint firstAttribute="width" constant="240" id="5Sj-BZ-sg4"/>
+                                    <constraint firstAttribute="height" constant="240" id="Hij-Yw-6Lg"/>
                                 </constraints>
+                            </imageView>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="00:00" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="3CL-8o-zYW">
+                                <rect key="frame" x="16" y="462" width="39" height="17"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                <color key="textColor" red="0.99999600649999998" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="00:00" textAlignment="right" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="RVb-HZ-QCX">
+                                <rect key="frame" x="320" y="462" width="39" height="17"/>
+                                <fontDescription key="fontDescription" type="system" pointSize="14"/>
+                                <color key="textColor" red="0.99999600649999998" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                            <slider opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" minValue="0.0" maxValue="1" translatesAutoresizingMaskIntoConstraints="NO" id="RWN-If-dGG">
+                                <rect key="frame" x="14" y="424" width="347" height="31"/>
+                                <color key="tintColor" red="1" green="0.83234566450000003" blue="0.47320586440000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                                <color key="maximumTrackTintColor" red="0.99999600649999998" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                                <color key="thumbTintColor" red="1" green="0.83234566450000003" blue="0.47320586440000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                 <connections>
                                     <action selector="scrubbing:" destination="vXZ-lx-hvc" eventType="touchUpOutside" id="HeH-aB-VXZ"/>
                                     <action selector="scrubbing:" destination="vXZ-lx-hvc" eventType="touchUpInside" id="NfP-3T-dnw"/>
+                                    <action selector="scrubbingValueChanged:" destination="vXZ-lx-hvc" eventType="valueChanged" id="MLD-nW-rXm"/>
                                     <action selector="startScrubbing:" destination="vXZ-lx-hvc" eventType="touchDown" id="lD9-dR-QTO"/>
                                 </connections>
                             </slider>
-                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="EOo-zV-6l2">
-                                <rect key="frame" x="164" y="494" width="46" height="30"/>
-                                <constraints>
-                                    <constraint firstAttribute="height" constant="30" id="9sD-FT-FL0"/>
-                                </constraints>
-                                <state key="normal" title="Play"/>
-                                <connections>
-                                    <action selector="togglePlay:" destination="vXZ-lx-hvc" eventType="touchUpInside" id="oYu-xi-n6T"/>
-                                </connections>
-                            </button>
-                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="TPr-Wm-k0L">
-                                <rect key="frame" x="168" y="58" width="39" height="30"/>
-                                <state key="normal" title="PlayB"/>
-                                <connections>
-                                    <action selector="playA:" destination="vXZ-lx-hvc" eventType="touchUpInside" id="LEW-J0-qbI"/>
-                                    <action selector="playB:" destination="vXZ-lx-hvc" eventType="touchUpInside" id="OhP-ri-ZWx"/>
-                                </connections>
-                            </button>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Title" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="dfk-yr-rwm">
+                                <rect key="frame" x="16" y="354" width="343" height="21.5"/>
+                                <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="18"/>
+                                <color key="textColor" red="0.99999600649999998" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                                <nil key="highlightedColor"/>
+                            </label>
+                            <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Artist" textAlignment="center" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="T7Y-1Q-7UU">
+                                <rect key="frame" x="16" y="379.5" width="343" height="19.5"/>
+                                <fontDescription key="fontDescription" type="system" weight="thin" pointSize="16"/>
+                                <color key="textColor" red="0.99999600649999998" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                                <nil key="highlightedColor"/>
+                            </label>
                         </subviews>
-                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <color key="backgroundColor" red="0.12984204290000001" green="0.12984612579999999" blue="0.12984395030000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <color key="tintColor" red="1" green="0.83234566450000003" blue="0.47320586440000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                         <constraints>
-                            <constraint firstAttribute="trailingMargin" secondItem="EOo-zV-6l2" secondAttribute="trailing" constant="149" id="71L-Hv-1br"/>
-                            <constraint firstItem="RWN-If-dGG" firstAttribute="centerY" secondItem="kh9-bI-dsS" secondAttribute="centerY" id="Ee0-Yx-h5a"/>
-                            <constraint firstItem="RWN-If-dGG" firstAttribute="centerX" secondItem="kh9-bI-dsS" secondAttribute="centerX" id="EzW-Sk-mlN"/>
-                            <constraint firstItem="EOo-zV-6l2" firstAttribute="leading" secondItem="kh9-bI-dsS" secondAttribute="leadingMargin" constant="148" id="OKq-yH-xWk"/>
-                            <constraint firstItem="TPr-Wm-k0L" firstAttribute="centerX" secondItem="kh9-bI-dsS" secondAttribute="centerX" id="OaA-Nd-ZGX"/>
-                            <constraint firstItem="ExO-ir-bnt" firstAttribute="top" secondItem="jyV-Pf-zRb" secondAttribute="bottom" id="VtX-IN-h4a"/>
-                            <constraint firstItem="2fi-mo-0CV" firstAttribute="top" secondItem="EOo-zV-6l2" secondAttribute="bottom" constant="143" id="m8i-yM-pER"/>
-                            <constraint firstItem="ExO-ir-bnt" firstAttribute="centerX" secondItem="kh9-bI-dsS" secondAttribute="centerX" id="mc2-i7-c1f"/>
-                            <constraint firstItem="TPr-Wm-k0L" firstAttribute="top" secondItem="ExO-ir-bnt" secondAttribute="bottom" constant="8" id="voY-Ue-QrT"/>
+                            <constraint firstItem="T7Y-1Q-7UU" firstAttribute="leading" secondItem="kh9-bI-dsS" secondAttribute="leadingMargin" id="0eh-sL-186"/>
+                            <constraint firstItem="l9B-hM-Ajc" firstAttribute="trailing" secondItem="kh9-bI-dsS" secondAttribute="trailingMargin" id="54L-0h-0ba"/>
+                            <constraint firstItem="l9B-hM-Ajc" firstAttribute="top" secondItem="jyV-Pf-zRb" secondAttribute="bottom" id="9Uh-K9-988"/>
+                            <constraint firstItem="RVb-HZ-QCX" firstAttribute="trailing" secondItem="kh9-bI-dsS" secondAttribute="trailingMargin" id="BhV-UD-qhh"/>
+                            <constraint firstItem="FCd-3e-22D" firstAttribute="centerX" secondItem="kh9-bI-dsS" secondAttribute="centerX" id="GhI-f1-DkR"/>
+                            <constraint firstItem="T7Y-1Q-7UU" firstAttribute="trailing" secondItem="kh9-bI-dsS" secondAttribute="trailingMargin" id="HoH-i0-yof"/>
+                            <constraint firstItem="RWN-If-dGG" firstAttribute="leading" secondItem="kh9-bI-dsS" secondAttribute="leadingMargin" id="Nw7-WM-LFd"/>
+                            <constraint firstItem="RX3-VR-CL6" firstAttribute="centerX" secondItem="kh9-bI-dsS" secondAttribute="centerX" id="O0h-NL-iXW"/>
+                            <constraint firstItem="dfk-yr-rwm" firstAttribute="top" secondItem="FCd-3e-22D" secondAttribute="bottom" constant="30" id="W4w-6K-AW8"/>
+                            <constraint firstItem="RWN-If-dGG" firstAttribute="top" secondItem="T7Y-1Q-7UU" secondAttribute="bottom" constant="25" id="XgV-XL-QCL"/>
+                            <constraint firstItem="dfk-yr-rwm" firstAttribute="leading" secondItem="kh9-bI-dsS" secondAttribute="leadingMargin" id="YUE-uf-Rp1"/>
+                            <constraint firstItem="RVb-HZ-QCX" firstAttribute="top" secondItem="RWN-If-dGG" secondAttribute="bottom" constant="8" id="ZkD-u2-Zbr"/>
+                            <constraint firstItem="T7Y-1Q-7UU" firstAttribute="top" secondItem="dfk-yr-rwm" secondAttribute="bottom" constant="4" id="baR-zV-tgo"/>
+                            <constraint firstItem="RWN-If-dGG" firstAttribute="trailing" secondItem="kh9-bI-dsS" secondAttribute="trailingMargin" id="eNt-u9-qot"/>
+                            <constraint firstItem="RX3-VR-CL6" firstAttribute="leading" secondItem="kh9-bI-dsS" secondAttribute="leadingMargin" constant="16" id="hEd-b2-Ggo"/>
+                            <constraint firstItem="FCd-3e-22D" firstAttribute="top" secondItem="l9B-hM-Ajc" secondAttribute="bottom" constant="30" id="ikz-ZP-jNM"/>
+                            <constraint firstAttribute="trailingMargin" secondItem="RX3-VR-CL6" secondAttribute="trailing" constant="16" id="kSP-Mq-R5P"/>
+                            <constraint firstItem="dfk-yr-rwm" firstAttribute="trailing" secondItem="kh9-bI-dsS" secondAttribute="trailingMargin" id="m6u-7a-ffF"/>
+                            <constraint firstItem="3CL-8o-zYW" firstAttribute="top" secondItem="RWN-If-dGG" secondAttribute="bottom" constant="8" id="sGK-bn-zxD"/>
+                            <constraint firstItem="2fi-mo-0CV" firstAttribute="top" secondItem="RX3-VR-CL6" secondAttribute="bottom" constant="100" id="vd2-dd-hVu"/>
+                            <constraint firstItem="3CL-8o-zYW" firstAttribute="leading" secondItem="kh9-bI-dsS" secondAttribute="leadingMargin" id="wOy-Rx-rvK"/>
                         </constraints>
                     </view>
                     <connections>
+                        <outlet property="artistLabel" destination="T7Y-1Q-7UU" id="b5S-lt-PqG"/>
+                        <outlet property="elapsedTimeLabel" destination="3CL-8o-zYW" id="7Wg-7X-Vrd"/>
+                        <outlet property="imageView" destination="FCd-3e-22D" id="gKL-za-haV"/>
                         <outlet property="playButton" destination="EOo-zV-6l2" id="2d1-ad-s1k"/>
+                        <outlet property="remainingTimeLabel" destination="RVb-HZ-QCX" id="8hp-CK-XjF"/>
                         <outlet property="slider" destination="RWN-If-dGG" id="Yxw-Gf-bR3"/>
+                        <outlet property="titleLabel" destination="dfk-yr-rwm" id="Hk3-m5-IOi"/>
                     </connections>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="x5A-6p-PRh" sceneMemberID="firstResponder"/>
             </objects>
             <point key="canvasLocation" x="117.59999999999999" y="118.29085457271366"/>
         </scene>
+        <!--Queue View Controller-->
+        <scene sceneID="5Fm-oE-9Zc">
+            <objects>
+                <viewController id="vDz-qW-uY8" customClass="QueueViewController" customModule="SwiftAudio_Example" customModuleProvider="target" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="kv3-s6-lb0"/>
+                        <viewControllerLayoutGuide type="bottom" id="Fhe-7w-8BG"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="y7Y-Gm-oyZ">
+                        <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="dzA-9p-ejh">
+                                <rect key="frame" x="310" y="20" width="49" height="34"/>
+                                <fontDescription key="fontDescription" type="boldSystem" pointSize="18"/>
+                                <state key="normal" title="Close"/>
+                                <connections>
+                                    <action selector="closeButton:" destination="vDz-qW-uY8" eventType="touchUpInside" id="0TB-bG-he7"/>
+                                </connections>
+                            </button>
+                            <tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="none" rowHeight="-1" estimatedRowHeight="-1" sectionHeaderHeight="28" sectionFooterHeight="28" translatesAutoresizingMaskIntoConstraints="NO" id="HPi-Pd-J9K">
+                                <rect key="frame" x="0.0" y="74" width="375" height="593"/>
+                                <color key="backgroundColor" red="0.12984204290000001" green="0.12984612579999999" blue="0.12984395030000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                            </tableView>
+                        </subviews>
+                        <color key="backgroundColor" red="0.12984204290000001" green="0.12984612579999999" blue="0.12984395030000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <color key="tintColor" red="1" green="0.1857388616" blue="0.57339501380000002" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <constraints>
+                            <constraint firstAttribute="trailing" secondItem="HPi-Pd-J9K" secondAttribute="trailing" id="CdI-lT-19N"/>
+                            <constraint firstItem="Fhe-7w-8BG" firstAttribute="top" secondItem="HPi-Pd-J9K" secondAttribute="bottom" id="Gb9-C1-ajx"/>
+                            <constraint firstItem="HPi-Pd-J9K" firstAttribute="leading" secondItem="y7Y-Gm-oyZ" secondAttribute="leading" id="aN2-LD-yxR"/>
+                            <constraint firstItem="HPi-Pd-J9K" firstAttribute="top" secondItem="dzA-9p-ejh" secondAttribute="bottom" constant="20" id="aSx-t1-T3e"/>
+                            <constraint firstItem="dzA-9p-ejh" firstAttribute="top" secondItem="kv3-s6-lb0" secondAttribute="bottom" id="nAL-i2-VQS"/>
+                            <constraint firstAttribute="trailing" secondItem="dzA-9p-ejh" secondAttribute="trailing" constant="16" id="qrg-S3-JJ2"/>
+                        </constraints>
+                    </view>
+                    <connections>
+                        <outlet property="tableView" destination="HPi-Pd-J9K" id="P8P-at-xLc"/>
+                    </connections>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="zk4-9r-5Oh" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="917.60000000000002" y="117.39130434782609"/>
+        </scene>
     </scenes>
 </document>

Example/SwiftAudio/Double + Extensions.swift

@@ -0,0 +1,25 @@
+//
+//  Double + Extensions.swift
+//  SwiftAudio_Example
+//
+//  Created by Jørgen Henrichsen on 25/03/2018.
+//  Copyright © 2018 CocoaPods. All rights reserved.
+//
+
+import Foundation
+
+extension Double {
+    
+    private var formatter: DateComponentsFormatter {
+        let formatter = DateComponentsFormatter()
+        formatter.allowedUnits = [.minute, .second]
+        formatter.unitsStyle = .positional
+        formatter.zeroFormattingBehavior = .pad
+        return formatter
+    }
+    
+    func secondsToString() -> String {
+        return formatter.string(from: self) ?? ""
+    }
+    
+}

Example/SwiftAudio/Info.plist

@@ -35,10 +35,14 @@
 	<array>
 		<string>armv7</string>
 	</array>
+	<key>UIStatusBarStyle</key>
+	<string>UIStatusBarStyleLightContent</string>
 	<key>UISupportedInterfaceOrientations</key>
 	<array>
 		<string>UIInterfaceOrientationPortrait</string>
 		<string>UIInterfaceOrientationLandscapeLeft</string>
 	</array>
+	<key>UIViewControllerBasedStatusBarAppearance</key>
+	<false/>
 </dict>
 </plist>

Example/SwiftAudio/QueueTableViewCell.swift

@@ -0,0 +1,24 @@
+//
+//  QueueTableViewCell.swift
+//  SwiftAudio_Example
+//
+//  Created by Jørgen Henrichsen on 25/03/2018.
+//  Copyright © 2018 CocoaPods. All rights reserved.
+//
+
+import UIKit
+
+class QueueTableViewCell: UITableViewCell {
+
+    @IBOutlet weak var titleLabel: UILabel!
+    @IBOutlet weak var artistLabel: UILabel!
+    
+    override func awakeFromNib() {
+        super.awakeFromNib()
+    }
+
+    override func setSelected(_ selected: Bool, animated: Bool) {
+        super.setSelected(selected, animated: animated)
+    }
+    
+}

Example/SwiftAudio/QueueTableViewCell.xib

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="13771" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES">
+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13772"/>
+        <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="QueueTableViewCell" customModule="SwiftAudio_Example" customModuleProvider="target"/>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <tableViewCell contentMode="scaleToFill" selectionStyle="default" indentationWidth="10" id="KGk-i7-Jjw" customClass="QueueTableViewCell" customModule="SwiftAudio_Example" customModuleProvider="target">
+            <rect key="frame" x="0.0" y="0.0" width="375" height="80"/>
+            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
+            <tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" tableViewCell="KGk-i7-Jjw" id="H2p-sc-9uM">
+                <rect key="frame" x="0.0" y="0.0" width="375" height="79.5"/>
+                <autoresizingMask key="autoresizingMask"/>
+                <subviews>
+                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Title" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="R0I-g7-ETn">
+                        <rect key="frame" x="16" y="16" width="343" height="19.5"/>
+                        <fontDescription key="fontDescription" type="system" weight="semibold" pointSize="16"/>
+                        <color key="textColor" red="0.99999600649999998" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <nil key="highlightedColor"/>
+                    </label>
+                    <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Artist" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="jRU-3B-2pA">
+                        <rect key="frame" x="16" y="43.5" width="343" height="19.5"/>
+                        <fontDescription key="fontDescription" type="system" weight="light" pointSize="16"/>
+                        <color key="textColor" red="0.99999600649999998" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                        <nil key="highlightedColor"/>
+                    </label>
+                </subviews>
+                <color key="backgroundColor" red="0.12984204290000001" green="0.12984612579999999" blue="0.12984395030000001" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                <constraints>
+                    <constraint firstItem="R0I-g7-ETn" firstAttribute="trailing" secondItem="H2p-sc-9uM" secondAttribute="trailingMargin" id="8gl-XI-iAW"/>
+                    <constraint firstItem="jRU-3B-2pA" firstAttribute="trailing" secondItem="H2p-sc-9uM" secondAttribute="trailingMargin" id="A7F-XO-H0i"/>
+                    <constraint firstItem="jRU-3B-2pA" firstAttribute="top" secondItem="R0I-g7-ETn" secondAttribute="bottom" constant="8" id="Jdu-e3-Oeq"/>
+                    <constraint firstItem="R0I-g7-ETn" firstAttribute="leading" secondItem="H2p-sc-9uM" secondAttribute="leadingMargin" id="VNU-d7-G4N"/>
+                    <constraint firstAttribute="bottomMargin" secondItem="jRU-3B-2pA" secondAttribute="bottom" constant="6" id="nBr-J4-PUM"/>
+                    <constraint firstItem="R0I-g7-ETn" firstAttribute="top" secondItem="H2p-sc-9uM" secondAttribute="topMargin" constant="5" id="tE6-pp-JML"/>
+                    <constraint firstItem="jRU-3B-2pA" firstAttribute="leading" secondItem="H2p-sc-9uM" secondAttribute="leadingMargin" id="z3F-hI-GcC"/>
+                </constraints>
+            </tableViewCellContentView>
+            <viewLayoutGuide key="safeArea" id="njF-e1-oar"/>
+            <connections>
+                <outlet property="artistLabel" destination="jRU-3B-2pA" id="IVV-n5-wmt"/>
+                <outlet property="titleLabel" destination="R0I-g7-ETn" id="ICg-6a-6vz"/>
+            </connections>
+            <point key="canvasLocation" x="34.5" y="54"/>
+        </tableViewCell>
+    </objects>
+</document>

Example/SwiftAudio/QueueViewController.swift

@@ -0,0 +1,84 @@
+//
+//  QueueViewController.swift
+//  SwiftAudio_Example
+//
+//  Created by Jørgen Henrichsen on 25/03/2018.
+//  Copyright © 2018 CocoaPods. All rights reserved.
+//
+
+import UIKit
+import SwiftAudio
+
+
+class QueueViewController: UIViewController {
+    
+    let controller = AudioController.shared
+    @IBOutlet weak var tableView: UITableView!
+    
+    let cellReuseId: String = "QueueCell"
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        tableView.register(UINib.init(nibName: "QueueTableViewCell", bundle: Bundle.main), forCellReuseIdentifier: cellReuseId)
+        tableView.delegate = self
+        tableView.dataSource = self
+    }
+
+    override func didReceiveMemoryWarning() {
+        super.didReceiveMemoryWarning()
+    }
+    
+    @IBAction func closeButton(_ sender: UIButton) {
+        self.dismiss(animated: true, completion: nil)
+    }
+    
+}
+
+extension QueueViewController: UITableViewDataSource, UITableViewDelegate {
+    
+    func numberOfSections(in tableView: UITableView) -> Int {
+        return 2
+    }
+    
+    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+        switch section {
+        case 0:
+            return 1
+        case 1:
+            return controller.player.nextItems?.count ?? 0
+        default:
+            return 0
+        }
+    }
+    
+    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        let cell = tableView.dequeueReusableCell(withIdentifier: cellReuseId, for: indexPath) as! QueueTableViewCell
+        
+        let item: AudioItem?
+        switch indexPath.section {
+        case 0:
+            item = controller.player.currentItem
+        case 1:
+            item = controller.player.nextItems?[indexPath.row]
+        default:
+            item = nil
+        }
+        
+        if let item = item {
+            cell.titleLabel.text = item.getTitle()
+            cell.artistLabel.text = item.getArtist()
+        }
+        
+        return cell
+    }
+    
+    func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
+        switch section {
+        case 0: return "Playing Now"
+        case 1: return "Up Next"
+        default: return nil
+        }
+    }
+    
+}

Example/SwiftAudio/ViewController.swift

@@ -16,43 +16,30 @@ class ViewController: UIViewController {
 
     @IBOutlet weak var playButton: UIButton!
     @IBOutlet weak var slider: UISlider!
+    @IBOutlet weak var imageView: UIImageView!
+    @IBOutlet weak var remainingTimeLabel: UILabel!
+    @IBOutlet weak var elapsedTimeLabel: UILabel!
+    @IBOutlet weak var titleLabel: UILabel!
+    @IBOutlet weak var artistLabel: UILabel!
     
     var isScrubbing: Bool = false
-    var audioPlayer: AudioPlayer = AudioPlayer()
-    let audioSessionController: AudioSessionController = AudioSessionController.shared
-    let localSource = DefaultAudioItem(audioUrl: Bundle.main.path(forResource: "WAV-MP3", ofType: "wav")!, artist: "Artist", title: "Title", albumTitle: "Album", sourceType: .file, artwork: #imageLiteral(resourceName: "cover"))
-    let streamSource = DefaultAudioItem(audioUrl: "https://p.scdn.co/mp3-preview/081447adc23dad4f79ba4f1082615d1c56edf5e1?cid=d8a5ed958d274c2e8ee717e6a4b0971d", artist: "Bon Iver", title: "8 (circle)", albumTitle: "22, A Million", sourceType: .stream, artwork: #imageLiteral(resourceName: "22AMI"))
-    
-    var artwork: MPMediaItemArtwork!
+    let controller = AudioController.shared
     
     override func viewDidLoad() {
         super.viewDidLoad()
-        audioPlayer.delegate = self
-        audioPlayer.remoteCommands = [
-                .stop,
-                .togglePlayPause,
-                .skipForward(preferredIntervals: [30]),
-                .skipBackward(preferredIntervals: [30]),
-                .changePlaybackPosition
-            ]
-        try? audioSessionController.set(category: .playback)
-        try? audioSessionController.activateSession()
-        let image = #imageLiteral(resourceName: "cover")
-        artwork = MPMediaItemArtwork(boundsSize: image.size, requestHandler: { (size) -> UIImage in
-            return image
-        })
-    }
-    
-    @IBAction func playA(_ sender: Any) {
-        try? audioPlayer.load(item: localSource)
-    }
-    
-    @IBAction func playB(_ sender: Any) {
-        try? audioPlayer.load(item: streamSource)
+        controller.player.delegate = self
     }
     
     @IBAction func togglePlay(_ sender: Any) {
-        try? audioPlayer.togglePlaying()
+        try? controller.player.togglePlaying()
+    }
+    
+    @IBAction func previous(_ sender: Any) {
+        try? controller.player.previous()
+    }
+    
+    @IBAction func next(_ sender: Any) {
+        try? controller.player.next()
     }
     
     @IBAction func startScrubbing(_ sender: UISlider) {
@@ -60,27 +47,39 @@ class ViewController: UIViewController {
     }
     
     @IBAction func scrubbing(_ sender: UISlider) {
-        try? audioPlayer.seek(to: Double(slider.value))
+        try? controller.player.seek(to: Double(slider.value))
     }
     
-    func update() {
-        slider.maximumValue = Float(audioPlayer.duration)
-        slider.setValue(Float(audioPlayer.currentTime), animated: true)
+    @IBAction func scrubbingValueChanged(_ sender: UISlider) {
+        let value = Double(slider.value)
+        elapsedTimeLabel.text = value.secondsToString()
+        remainingTimeLabel.text = (controller.player.duration - value).secondsToString()
     }
-    
 }
 
 extension ViewController: AudioPlayerDelegate {
     
     func audioPlayer(playerDidChangeState state: AVPlayerWrapperState) {
-        print("AudioPlayer state: ", state.rawValue)
-        self.update()
         
-        if state == .playing {
-            playButton.setTitle("Pause", for: .normal)
-        }
-        else {
-            playButton.setTitle("Play", for: .normal)
+        playButton.setTitle(state == .playing ? "Pause" : "Play", for: .normal)
+        
+        switch state {
+        case .ready:
+            
+            if let item = controller.player.currentItem {
+                titleLabel.text = item.getTitle()
+                artistLabel.text = item.getArtist()
+                item.getArtwork({ (image) in
+                    self.imageView.image = image
+                })
+            }
+            
+            slider.maximumValue = Float(controller.player.duration)
+            slider.setValue(Float(controller.player.currentTime), animated: true)
+            
+        case .loading, .playing, .paused, .idle:
+            slider.maximumValue = Float(controller.player.duration)
+            slider.setValue(Float(controller.player.currentTime), animated: true)
             
         }
     }
@@ -92,6 +91,8 @@ extension ViewController: AudioPlayerDelegate {
     func audioPlayer(secondsElapsed seconds: Double) {
         if !isScrubbing {
             slider.setValue(Float(seconds), animated: false)
+            elapsedTimeLabel.text = controller.player.currentTime.secondsToString()
+            remainingTimeLabel.text = (controller.player.duration - controller.player.currentTime).secondsToString()
         }
     }
     

Example/Tests/QueueManagerTests.swift

@@ -0,0 +1,254 @@
+import Quick
+import Nimble
+
+@testable import SwiftAudio
+
+
+class QueueManagerTests: QuickSpec {
+    
+    let dummyItem = 0
+    
+    let dummyItems: [Int] = [0, 1, 2, 3, 4, 5, 6]
+    
+    override func spec() {
+        
+        describe("A QueueManager") {
+            
+            var manager: QueueManager<Int>!
+            
+            beforeEach {
+                manager = QueueManager()
+            }
+            
+            context("when adding one item", {
+                
+                beforeEach {
+                    manager.addItem(self.dummyItem)
+                }
+                
+                it("should have an item in the queue", closure: {
+                    expect(manager.items).notTo(beEmpty())
+                })
+                
+                it("should set it as the current item", closure: {
+                    expect(manager.current).toNot(beNil())
+                    expect(manager.current).to(equal(self.dummyItem))
+                })
+                
+                context("then calling next", {
+                    
+                    var nextItem: Int?
+                    
+                    beforeEach {
+                        nextItem = try? manager.next()
+                    }
+                    
+                    it("should not return", closure: {
+                        expect(nextItem).to(beNil())
+                    })
+                    
+                })
+                
+                context("then calling previous", {
+                    var previousItem: Int?
+                    
+                    beforeEach {
+                        previousItem = try? manager.previous()
+                    }
+                    
+                    it("should not return", closure: {
+                        expect(previousItem).to(beNil())
+                    })
+                })
+                
+            })
+            
+            context("when adding multiple items", {
+                
+                beforeEach {
+                    manager.addItems(self.dummyItems)
+                }
+                
+                it("should have items in the queue", closure: {
+                    expect(manager.items.count).to(equal(self.dummyItems.count))
+                })
+                
+                it("should have the first item as a current item", closure: {
+                    expect(manager.current).toNot(beNil())
+                    expect(manager.current).to(equal(self.dummyItems.first))
+                })
+                
+                context("then calling next", {
+                    var nextItem: Int?
+                    beforeEach {
+                        nextItem = try? manager.next()
+                    }
+                    
+                    it("should return the next item", closure: {
+                        expect(nextItem).toNot(beNil())
+                        expect(nextItem).to(equal(self.dummyItems[1]))
+                    })
+                    
+                    it("should have next current item", closure: {
+                        expect(manager.current).to(equal(self.dummyItems[1]))
+                    })
+                    
+                    context("then calling previous", {
+                        var previousItem: Int?
+                        beforeEach {
+                            previousItem = try? manager.previous()
+                        }
+                        it("should return the first item", closure: {
+                            expect(previousItem).toNot(beNil())
+                            expect(previousItem).to(equal(self.dummyItems.first))
+                        })
+                        it("should have the previous current item", closure: {
+                            expect(manager.current).to(equal(self.dummyItems.first))
+                        })
+                    })
+                })
+                
+                // MARK: - Removal
+                
+                context("then removing the second item", {
+                    var removed: Int?
+                    beforeEach {
+                        removed = try? manager.remove(atIndex: 1)
+                    }
+                    
+                    it("should have one less item", closure: {
+                        expect(removed).toNot(beNil())
+                        expect(manager.items.count).to(equal(self.dummyItems.count - 1))
+                    })
+                })
+                
+                context("then removing the last item", {
+                    var removed: Int?
+                    beforeEach {
+                        removed = try? manager.remove(atIndex: self.dummyItems.count - 1)
+                    }
+                    
+                    it("should have one less item", closure: {
+                        expect(removed).toNot(beNil())
+                        expect(manager.items.count).to(equal(self.dummyItems.count - 1))
+                    })
+                })
+                
+                context("then removing the current item", {
+                    var removed: Int?
+                    beforeEach {
+                        removed = try? manager.remove(atIndex: manager.currentIndex)
+                    }
+                    it("should not remove any items", closure: {
+                        expect(removed).to(beNil())
+                        expect(manager.items.count).to(equal(self.dummyItems.count))
+                    })
+                })
+                
+                context("then removing with too large index", {
+                    var removed: Int?
+                    beforeEach {
+                        removed = try? manager.remove(atIndex: self.dummyItems.count)
+                    }
+
+                    it("should not remove any items", closure: {
+                        expect(removed).to(beNil())
+                        expect(manager.items.count).to(equal(self.dummyItems.count))
+                    })
+                })
+                
+                context("then removing with too small index", {
+                    var removed: Int?
+                    beforeEach {
+                        removed = try? manager.remove(atIndex: -1)
+                    }
+                    
+                    it("should not remove any items", closure: {
+                        expect(removed).to(beNil())
+                        expect(manager.items.count).to(equal(self.dummyItems.count))
+                    })
+                })
+                
+                // MARK: - Jumping
+                
+                context("then jumping to the second item", {
+                    var jumped: Int?
+                    beforeEach {
+                        try? jumped = manager.jump(to: 1)
+                    }
+                    
+                    it("should return the current item", closure: {
+                        expect(jumped).toNot(beNil())
+                        expect(jumped).to(equal(manager.current))
+                    })
+                    
+                    it("should move the current index", closure: {
+                        expect(manager.currentIndex).to(equal(1))
+                    })
+                })
+                
+                context("then jumping to last item", closure: {
+                    var jumped: Int?
+                    beforeEach {
+                        try? jumped = manager.jump(to: manager.items.count - 1)
+                    }
+                    it("should return the current item", closure: {
+                        expect(jumped).toNot(beNil())
+                        expect(jumped).to(equal(manager.current))
+                    })
+                    
+                    it("should move the current index", closure: {
+                        expect(manager.currentIndex).to(equal(manager.items.count - 1))
+                    })
+                })
+                
+                context("then jumping to a negative index", closure: {
+                    var jumped: Int?
+                    beforeEach {
+                        jumped = try? manager.jump(to: -1)
+                    }
+                    
+                    it("should not return", closure: {
+                        expect(jumped).to(beNil())
+                    })
+                    
+                    it("should not move the current index", closure: {
+                        expect(manager.currentIndex).to(equal(0))
+                    })
+                })
+                
+                context("then jumping with too large index", closure: {
+                    var jumped: Int?
+                    beforeEach {
+                        jumped = try? manager.jump(to: manager.items.count)
+                    }
+                    it("should not return", closure: {
+                        expect(jumped).to(beNil())
+                    })
+                    
+                    it("should not move the current index", closure: {
+                        expect(manager.currentIndex).to(equal(0))
+                    })
+                })
+                
+                // MARK: - Moving
+                
+                context("then moving 2nd to 4th", closure: {
+                    let afterMoving: [Int] = [0, 2, 3, 1, 4, 5, 6]
+                    beforeEach {
+                        try? manager.moveItem(fromIndex: 1, toIndex: 3)
+                    }
+                    
+                    it("should move the item", closure: {
+                        expect(manager.items).to(equal(afterMoving))
+                    })
+                })
+            })
+            
+            
+            
+        }
+        
+    }
+    
+}

README.md

@@ -9,6 +9,7 @@ SwiftAudio is an audio player written in Swift, making it simpler to work with a
 
 ## Example
 
+To see the audio player in action clone the repo and run the example project!
 To run the example project, clone the repo, and run `pod install` from the Example directory first.
 
 ## Requirements
@@ -27,12 +28,21 @@ pod 'SwiftAudio'
 
 ### AudioPlayer
 ```swift
-let player = AudioPlayer()
+let player = QueuedAudioPlayer()
+let audioItem = DefaultAudioItem(audioUrl: "someUrl", sourceType: .stream)
+player.add(item: audioItem)
+```
+
+The player will load the track and start playing when ready. To disable this behaviour use `add(item:playWhenReady:)` and pass in `false`. This is `true` by default. To get notified of events during playback and loading, implement `AudioPlayerDelegate` and the player will notify you with changes.
+
+If you want a simpler audio player without queue functionality, use:
+```swift
+let player = SimpleAudioPlayer()
 let audioItem = DefaultAudioItem(audioUrl: "someUrl", sourceType: .stream)
 player.load(item: audioItem)
 ```
 
-The player will load the track and start playing when ready. To disable this behaviour use `load(item:playWhenReady:)` and pass in `false`. This is `true` by default. To get notified of events during playback and loading, implement `AudioPlayerDelegate` and the player will notify you with changes.
+**NOTE**: Do not use `AudioPlayer` directly. Use one of the above types.
 
 #### States
 The `AudioPlayer` has a `state` property, to make it easier to determine appropriate actions. The different states:
@@ -42,6 +52,17 @@ The `AudioPlayer` has a `state` property, to make it easier to determine appropr
 + **playing**: The player is playing.
 + **paused**: The player is paused.
 
+#### Queue
+The `QueuedAudioPlayer` maintains a queue of audio tracks.
+The arrangement of the tracks are: [Previous]-[Current]-[Next].
+
+When a track is done playing, the player will load the next track and update the queue, as long as `automaticallyPlayNextSong` is `true` (This is by default).
+
+Items can be added to the queue by calling `player.add(item:)` or `player.add(items:)`.
+Use `removeItem(atIndex:)` and `moveItem(fromIndex:toIndex:)` to manipulate the queue.
+
+The queue can be navigated by using `next()`, `previous()` and `jumpToItem(atIndex:)`
+
 ### Audio Session
 Remember to activate an audio session with an appropriate category for your app. This can be done with `AudioSessionCategory`:
 ```swift
@@ -85,9 +106,6 @@ Currently some configuration options are supported:
 + `volume`: The volume of the player. From 0.0 to 1.0.
 + `automaticallyUpdateNowPlayingInfo`: If you want to handle updating of the `MPNowPlayingInfoCenter` yourself, set this to `false`. Default is `true`.
 
-## Plans
-* Ability to queue items
-
 ## Author
 
 Jørgen Henrichsen

SwiftAudio.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'SwiftAudio'
-  s.version          = '0.2.1'
+  s.version          = '0.3.0'
   s.summary          = 'Easy audio streaming for iOS'
 
 # This description is used to generate tags and improve search results.

SwiftAudio/Classes/APError.swift

@@ -0,0 +1,27 @@
+//
+//  APError.swift
+//  SwiftAudio
+//
+//  Created by Jørgen Henrichsen on 25/03/2018.
+//
+
+import Foundation
+
+
+public struct APError {
+    
+    enum LoadError: Error {
+        case invalidSourceUrl(String)
+    }
+    
+    enum PlaybackError: Error {
+        case noLoadedItem
+    }
+    
+    enum QueueError: Error {
+        case noPreviousItem
+        case noNextItem
+        case invalidIndex(index: Int, message: String)
+    }
+    
+}

SwiftAudio/Classes/AVPlayerWrapper/AVPlayerWrapper.swift

@@ -21,18 +21,6 @@ protocol AVPlayerWrapperDelegate: class {
     
 }
 
-public struct APError {
-    
-    enum LoadError: Error {
-        case invalidSourceUrl(String)
-    }
-    
-    enum PlaybackError: Error {
-        case noLoadedItem
-    }
-    
-}
-
 class AVPlayerWrapper {
     
     struct Constants {
@@ -215,7 +203,7 @@ class AVPlayerWrapper {
      */
     func stop() {
         try? pause()
-        reset()
+        reset(soft: false)
     }
     
     /**
@@ -265,7 +253,7 @@ class AVPlayerWrapper {
     
     private func load(from url: URL, playWhenReady: Bool) {
         
-        reset()
+        reset(soft: true)
         _playWhenReady = playWhenReady
         
         // Set item
@@ -283,8 +271,10 @@ class AVPlayerWrapper {
     /**
      Reset to get ready for playing from a different source.
      */
-    private func reset() {
-        avPlayer.replaceCurrentItem(with: nil)
+    private func reset(soft: Bool) {
+        if !soft {
+            avPlayer.replaceCurrentItem(with: nil)
+        }
         playerTimeObserver.unregisterForBoundaryTimeEvents()
         playerItemNotificationObserver.stopObservingCurrentItem()
     }
@@ -351,7 +341,6 @@ extension AVPlayerWrapper: AVPlayerItemNotificationObserverDelegate {
     // MARK: - AVPlayerItemNotificationObserverDelegate
     
     func itemDidPlayToEndTime() {
-        self.reset()
         delegate?.AVWrapperItemDidComplete()
     }
     

SwiftAudio/Classes/AudioItem.swift

@@ -24,6 +24,7 @@ public protocol AudioItem {
 }
 
 public struct DefaultAudioItem: AudioItem {
+    
 
     public var audioUrl: String
     
@@ -69,4 +70,6 @@ public struct DefaultAudioItem: AudioItem {
     public func getArtwork(_ handler: @escaping (UIImage?) -> Void) {
         handler(artwork)
     }
+    
+    
 }

SwiftAudio/Classes/AudioPlayer.swift

@@ -24,15 +24,22 @@ public protocol AudioPlayerDelegate: class {
     
 }
 
-public class AudioPlayer {
+/**
+ The main AudioPlayer.
+ - warning: DO NOT USE THIS CLASS, use `SimpleAudioPlayer` or `QueuedAudioPlayer`
+ */
+public class AudioPlayer: AVPlayerWrapperDelegate {
     
     let wrapper: AVPlayerWrapper
     let nowPlayingInfoController: NowPlayingInfoController
     let remoteCommandController: RemoteCommandController
     
-    public weak var delegate: AudioPlayerDelegate?
-    public var currentItem: AudioItem?
+    var _currentItem: AudioItem?
     
+    public weak var delegate: AudioPlayerDelegate?
+    public var currentItem: AudioItem? {
+        return _currentItem
+    }
     
     /**
      Set this to false to disable automatic updating of now playing info for control center and lock screen.
@@ -139,8 +146,8 @@ public class AudioPlayer {
      - parameter item: The AudioItem to load. The info given in this item is the one used for the InfoCenter.
      - parameter playWhenReady: Immediately start playback when the item is ready. Default is `true`. If you disable this you have to call play() or togglePlay() when the `state` switches to `ready`.
      */
-    public func load(item: AudioItem, playWhenReady: Bool = true) throws {
-        
+    func loadItem(_ item: AudioItem, playWhenReady: Bool = true) throws {
+        print("Loading: \(item)")
         switch item.getSourceType() {
         case .stream:
             try self.wrapper.load(fromUrlString: item.getSourceUrl(), playWhenReady: playWhenReady)
@@ -148,7 +155,7 @@ public class AudioPlayer {
             try self.wrapper.load(fromFilePath: item.getSourceUrl(), playWhenReady: playWhenReady)
         }
         
-        self.currentItem = item
+        self._currentItem = item
         set(item: item)
         setArtwork(forItem: item)
         enableRemoteCommands(forItem: item)
@@ -260,12 +267,10 @@ public class AudioPlayer {
     // MARK: - Private
     
     private func reset() {
-        self.currentItem = nil
+        self._currentItem = nil
     }
     
-}
-
-extension AudioPlayer: AVPlayerWrapperDelegate {
+    // MARK: - AVPlayerWrapperDelegate
     
     func AVWrapper(didChangeState state: AVPlayerWrapperState) {
         updatePlaybackValues()

SwiftAudio/Classes/QueueManager.swift

@@ -0,0 +1,171 @@
+//
+//  QueueManager.swift
+//  SwiftAudio
+//
+//  Created by Jørgen Henrichsen on 24/03/2018.
+//
+
+import Foundation
+
+
+class QueueManager<T> {
+    
+    private var _items: [T] = []
+    
+    /**
+     All items held by the queue.
+     */
+    public var items: [T] {
+        return _items
+    }
+    
+    public var nextItems: [T]? {
+        return Array(_items[_currentIndex + 1..<items.count])
+    }
+    
+    public var previousItems: [T] {
+        return Array(_items[0..<_currentIndex])
+    }
+    
+    private var _currentIndex: Int = 0
+    
+    /**
+     The index of the current item.
+     Will be populated event though there is no current item (When the queue is empty).
+     */
+    public var currentIndex: Int {
+        return _currentIndex
+    }
+    
+    /**
+     The current item for the queue.
+     */
+    public var current: T? {
+        if _items.count > _currentIndex {
+            return _items[_currentIndex]
+        }
+        return nil
+    }
+    
+    /**
+     Add a single item to the queue.
+     
+     - parameter item: The `AudioItem` to be added.
+     */
+    public func addItem(_ item: T) {
+        _items.append(item)
+    }
+    
+    /**
+     Add an array of items to the queue.
+     
+     - parameter items: The `AudioItem`s to be added.
+     */
+    public func addItems(_ items: [T]) {
+        _items.append(contentsOf: items)
+    }
+    
+    /**
+     Get the next item in the queue, if there are any.
+     Will update the current item.
+     
+     - throws: `APError.QueueError`
+     - returns: The next item.
+     */
+    @discardableResult
+    public func next() throws -> T {
+        let nextIndex = _currentIndex + 1
+        if _items.count > nextIndex {
+            _currentIndex = nextIndex
+            return _items[nextIndex]
+        }
+        else {
+            throw APError.QueueError.noNextItem
+        }
+    }
+    
+    /**
+     Get the previous item in the queue, if there are any.
+     Will update the current item.
+
+     - throws: `APError.QueueError`
+     - returns: The previous item.
+     */
+    @discardableResult
+    public func previous() throws -> T {
+        let previousIndex = _currentIndex - 1
+        if previousIndex >= 0 {
+            _currentIndex = previousIndex
+            return _items[previousIndex]
+        }
+        else {
+            throw APError.QueueError.noPreviousItem
+        }
+    }
+    
+    /**
+     Jump to a position in the queue.
+     Will update the current item.
+     
+     - parameter index: The index to jump to.
+     - throws: `APError.QueueError`
+     - returns: The item at the index.
+     */
+    @discardableResult
+    func jump(to index: Int) throws -> T {
+        guard index != currentIndex else {
+            throw APError.QueueError.invalidIndex(index: index, message: "Cannot jump to the current item")
+        }
+        
+        guard index >= 0 && items.count > index else {
+            throw APError.QueueError.invalidIndex(index: index, message: "The jump index has to be positive and smaller thant the count of current items (\(items.count))")
+        }
+        _currentIndex = index
+        return _items[index]
+    }
+    
+    /**
+     Move an item in the queue.
+     
+     - parameter fromIndex: The index of the item to be moved.
+     - parameter toIndex: The index to move the item to.
+     - throws: `APError.QueueError`
+     */
+    func moveItem(fromIndex: Int, toIndex: Int) throws {
+        
+        guard fromIndex != _currentIndex else {
+            throw APError.QueueError.invalidIndex(index: fromIndex, message: "The fromIndex cannot be equal to the current index.")
+        }
+        
+        guard fromIndex >= 0 && fromIndex < _items.count else {
+            throw APError.QueueError.invalidIndex(index: fromIndex, message: "The fromIndex has to be positive and smaller than the count of current items (\(items.count)).")
+        }
+        
+        guard toIndex >= 0 && toIndex < _items.count else {
+            throw APError.QueueError.invalidIndex(index: toIndex, message: "The toIndex has to be positive and smaller than the count of current items (\(items.count)).")
+        }
+        
+        _items.insert(_items.remove(at: fromIndex), at: toIndex)
+    }
+    
+    /**
+     Remove an item.
+     
+     - parameter index: The index of the item to remove.
+     - throws: APError.QueueError
+     - returns: The removed item.
+     */
+    @discardableResult
+    public func remove(atIndex index: Int) throws -> T {
+        guard index != _currentIndex else {
+            throw APError.QueueError.invalidIndex(index: index, message: "Cannot remove the current item!")
+        }
+        
+        guard index >= 0 && _items.count > index else {
+            throw APError.QueueError.invalidIndex(index: index, message: "Index for removal has to be postivie and smaller than the count of current items (\(items.count)).")
+        }
+        return _items.remove(at: index)
+    }
+
+    
+}

SwiftAudio/Classes/QueuedAudioPlayer.swift

@@ -0,0 +1,88 @@
+//
+//  QueuedAudioPlayer.swift
+//  SwiftAudio
+//
+//  Created by Jørgen Henrichsen on 24/03/2018.
+//
+
+import Foundation
+
+
+/**
+ An audio player that can keep track of a queue of AudioItems.
+ */
+public class QueuedAudioPlayer: AudioPlayer {
+    
+    let queueManager: QueueManager = QueueManager<AudioItem>()
+    
+    /**
+     Set wether the player should automatically play the next song when a song is finished.
+     Default is `true`.
+     */
+    public var automaticallyPlayNextSong: Bool = true
+    
+    public override var currentItem: AudioItem? {
+        return queueManager.current
+    }
+    
+    public var previousItems: [AudioItem]? {
+        return queueManager.previousItems
+    }
+    
+    public var nextItems: [AudioItem]? {
+        return queueManager.nextItems
+    }
+    
+    public func add(item: AudioItem, playWhenReady: Bool = true) throws {
+        if currentItem == nil {
+            queueManager.addItem(item)
+            try self.loadItem(item, playWhenReady: playWhenReady)
+        }
+        else {
+            queueManager.addItem(item)
+        }
+    }
+    
+    public func add(items: [AudioItem], playWhenReady: Bool = true) throws {
+        if currentItem == nil {
+            queueManager.addItems(items)
+            try self.loadItem(currentItem!, playWhenReady: playWhenReady)
+        }
+        else {
+            queueManager.addItems(items)
+        }
+    }
+    
+    public func next() throws {
+        let nextItem = try queueManager.next()
+        try self.loadItem(nextItem, playWhenReady: true)
+    }
+    
+    public func previous() throws {
+        let previousItem = try queueManager.previous()
+        try self.loadItem(previousItem, playWhenReady: true)
+    }
+    
+    public func removeItem(atIndex index: Int) throws {
+        try queueManager.remove(atIndex: index)
+    }
+    
+    public func jumpToItem(atIndex index: Int, playWhenReady: Bool = true) throws {
+        let item = try queueManager.jump(to: index)
+        try self.loadItem(item, playWhenReady: playWhenReady)
+    }
+    
+    func moveItem(fromIndex: Int, toIndex: Int) throws {
+        try queueManager.moveItem(fromIndex: fromIndex, toIndex: toIndex)
+    }
+    
+    // MARK: - AVPlayerWrapperDelegate
+    
+    override func AVWrapperItemDidComplete() {
+        super.AVWrapperItemDidComplete()
+        if automaticallyPlayNextSong {
+            try? self.next()
+        }
+    }
+    
+}

SwiftAudio/Classes/SimpleAudioPlayer.swift

@@ -0,0 +1,25 @@
+//
+//  SimpleAudioPlayer.swift
+//  SwiftAudio
+//
+//  Created by Jørgen Henrichsen on 24/03/2018.
+//
+
+import Foundation
+
+/**
+ A simple audio player that keeps on item at a time.
+ */
+public class SimpleAudioPlayer: AudioPlayer {
+    
+    /**
+     Load an AudioItem into the manager.
+     
+     - parameter item: The AudioItem to load. The info given in this item is the one used for the InfoCenter.
+     - parameter playWhenReady: Immediately start playback when the item is ready. Default is `true`. If you disable this you have to call play() or togglePlay() when the `state` switches to `ready`.
+     */
+    public func load(item: AudioItem, playWhenReady: Bool = true) throws {
+        try self.loadItem(item, playWhenReady: playWhenReady)
+    }
+    
+}