From the home page: GSI is an easy to use audio system which can be used over a network and which gives applications, through a very simple API, sample playing with stereo, 3D, doppler effects, music playing (MIDI, HMP, MUS), cd playing and ejecting/changing. GSI also contains a separately usable sound/music loading/saving/format conversion library libgsif (au/aiff/voc/wav/raw, midi/hmp/mus), although saving/format conversion is not completely done. GSI runs on any unix system that has generic /dev/audio (8000Hz mono mulaw), OSS, ultrasound project drivers, or NAS (well, it did once, I need to update the NAS stuff), e.g. Linux, OpenBSD and FreeBSD. CD playing is dependent on the OS' ioctl's and structs so that probably works on linux/*BSD only (Solaris may work, as it seems to use the same ioctl's/structs as Linux). License: 2-clause BSD-style for code / public domain for headers WWW: http://gsi.sourceforge.net/