FMOD is nice library, small, reliable and simple. But there's a problem with KISS Player opensource objective(and license).
We need a replacement that is opensource(GPL-compatible), simple, clean and lightweight. It should not add tons of dependencies.
The following were considered:
SDL_mixer: Not really suited for this purpose, also it relies on SDL
Audiere: outdated and supports only OSS on Linux
ffdshow/FFmpeg/libavcodec: overcomplex, adds bloatware, we won't play videos
irrKlang: not opensource
GStreamer: overcomplex, but it's used in similar projects
OpenAL: not really simple and need others libs for decompression(Vorbis, MAD...)
We need to play at least MP3, OGG, FLAC and WAV.