Added 'audio queue'
Renamed 'fill buffer' method in 'audio queue data source' protocol
Added simple audio file playing
Added magic cookie setting
Extracted 'packet description' to 'audio file reader'
Extracted 'magic cookie' to 'audio file reader'
Added 'audio reader' protocol
Added removed file
Added audio buffer class
Refactored 'audio buffer'
Refactored audio data
Fixed memory leaks in audio thread
Refactored 'audio data format'
Replaced 'audio reader delegate' with 'audio reader status'
Removed 'audio queue delegate'
Renamed 'current buffer' method to 'current buffer thread safely'
Added comlpetion block on 'audio reader successfully opened'
Added log message
Extracted 'audio queue' creation and setup to 'builder' class
Added 'volume', 'pan'