update example app to show podcast, soundbite, and radio

Example/SwiftAudioPlayer/Base.lproj/Main.storyboard

@@ -72,8 +72,8 @@
                                 <rect key="frame" x="16" y="60" width="343" height="32"/>
                                 <segments>
                                     <segment title="Soundbite"/>
-                                    <segment title="Acquired"/>
-                                    <segment title="Y Combinator"/>
+                                    <segment title="Podcast"/>
+                                    <segment title="Radio"/>
                                 </segments>
                                 <connections>
                                     <action selector="audioSelected:" destination="vXZ-lx-hvc" eventType="valueChanged" id="oYE-yq-348"/>

Example/SwiftAudioPlayer/Model.swift

@@ -13,18 +13,18 @@ struct AudioInfo: Hashable {
     
     var urls: [URL] = [URL(string: "https://www.fesliyanstudios.com/musicfiles/2019-04-23_-_Trusted_Advertising_-_www.fesliyanstudios.com/15SecVersion2019-04-23_-_Trusted_Advertising_-_www.fesliyanstudios.com.mp3")!,
                        URL(string: "https://chtbl.com/track/18338/traffic.libsyn.com/secure/acquired/acquired_-_armrev_2.mp3?dest-id=376122")!,
-                       URL(string: "https://backtracks.fm/ycombinator/pr/0f685f72-29b1-11e9-9bcf-0ece7a7d2472/111---jake-klamka-and-kevin-hale---y-combinator.mp3?s=1&sd=1&u=1549423185")!]
+                       URL(string: "https://ice6.somafm.com/groovesalad-256-mp3")!]
     
     var url: URL {
         switch index {
         case 0:
-            return URL(string: "https://www.fesliyanstudios.com/musicfiles/2019-04-23_-_Trusted_Advertising_-_www.fesliyanstudios.com/15SecVersion2019-04-23_-_Trusted_Advertising_-_www.fesliyanstudios.com.mp3")!
+            return urls[0]
         case 1:
-            return URL(string: "https://chtbl.com/track/18338/traffic.libsyn.com/secure/acquired/acquired_-_armrev_2.mp3?dest-id=376122")!
+            return urls[1]
         case 2:
-            return URL(string: "https://backtracks.fm/ycombinator/pr/0f685f72-29b1-11e9-9bcf-0ece7a7d2472/111---jake-klamka-and-kevin-hale---y-combinator.mp3?s=1&sd=1&u=1549423185")!
+            return urls[2]
         default:
-            return URL(string: "https://www.fesliyanstudios.com/musicfiles/2019-04-23_-_Trusted_Advertising_-_www.fesliyanstudios.com/15SecVersion2019-04-23_-_Trusted_Advertising_-_www.fesliyanstudios.com.mp3")!
+            return urls[0]
         }
     }
     
@@ -33,9 +33,9 @@ struct AudioInfo: Hashable {
         case 0:
             return "Soundbite"
         case 1:
-            return "Acquired"
+            return "Podcast"
         case 2:
-            return "Y Combinator"
+            return "Radio"
         default:
             return "Soundbite"
         }