MediaCentre is an media centre server application for use on a home computer so you'll see your movies, play music and view / edit your pics when you're away from your computer, using a browser. Has been tested on MacOSX, Ubuntu Linux, and WindowsXP
OS Radio is an open source radio automation solution. It is scalable from a small desktop application to a full featured database driven solution. It also contains the standalone Mr|Tots player cart player.
gbsplay emulates the sound hardware of the Nintendo Gameboy. It is able to play the sounds from a Gameboy module dump (.GBS format) over /dev/dsp and NAS. Included is an XMMS input plugin, a tool to display information about a .GBS file, and a demo song.
MarGridFlash is a Flash based program written in the open source haXe programming language that displays a grid created using Self-Organizing Maps and allows the user to click on grid squares, which plays the music file associated with that grid square.