The audio/portaudio-svn port
portaudio-svn-1960 – portable cross-platform audio API
PortAudio is a free, cross platform, open-source, audio I/O library. It
lets you write simple audio programs in 'C' that will compile and run on
many platforms including Windows, Macintosh (8,9,X), Unix (OSS), SGI,
and BeOS. PortAudio is intended to promote the exchange of audio
synthesis software between developers on different platforms.