(This works around issues with some Indy 3 sound tracks. These tracks seem to be broken, since they have way too long duration values for some notes which would fill up the event buffer rather quickly. I tested with the UNZ emulator to be sure that this is an issue which also occurs with the original driver.)
- renamed some stuff in the new midi driver code
- fixed minor bug in midi driver code
- fixed minor bug in euphony driver code
- add some functionality to towns audio interface