BASS is an audio library for use in Win32, MacOS, Linux and PocketPC software. It's purpose is to provide the most powerful and efficient (yet easy to use), sample, stream, MOD music, and recording functions. This library was written by Ian Luck, over at Un4seen Developments. New features include Add-on plugin system, MOD position & syncing in bytes, Support for AIFF files, Floating-point sampling, More options, and More.
The BASS audio library is used in MediaPortal for the default BASS audio player.