* audio plugin spec #1.2 for pj64-2.0, spec #1.1 for other emulators
* XAudio2, DirectSound8 and No Sound driver support
* XAudio2 upmix to 5.1 or 7.1
* prebuffer stream audio
* HLE interface
* LLE interface
* audio thread to update DirectSound buffer
* tested with project64 1.6, project64 2.0, project64 2.1, 1964 svn r146, 1964_ultrafast 3.0, and mupen64 5.1.
* debug OSD
* auto sync game to audio
* dynamic plugin interface
* Lua interface to tweak per game settings