SnackAmp is a multi-platform audio file and streaming music (MP3,Ogg, wav, etc.) player and file organizer suitable for very large music collections. Stand alone executables for Windows or Linux are available for download. An integrated Web server provides the ability to remote control the client and serve your music collection as streaming audio.
Waif is a console audio unfrontend. That means that between the business of choosing the files to listen to and listening to them, there is no interface to hijack a controlling terminal, hog up screen space, or waste a perfectly good xterm. It also ends the hassle of restarting a player moving from one display to another. Waif works all its magic in the background leaving you free to do more important work. Waif is flexible and robust, supporting a wide number of file formats (MP3, Ogg, WAV, RealPlayer, MIDI, audio CD, and more) and a wide number of helper applications including mpg123, mpg321, ogg123, freeamp, and xmms.
FMS is a tool to create all kinds of sounds from scratch. You can play any sound (sine, triangular, vowels, etc.) with any property settings (frequency, volume, balance, sweep, etc.) and modulations thereof. It also features tools to save sounds, play .MUS music, graphically display sounds, and make real noise.