A music typesetter. Input is a plain text file, output is in PostScript.

CDG/MP3+G karaoke player. Can search inside Zip files.

Audio player based on GTK+ written in Python, lets users make playlists with regular expressions and provides advanced tag editing features.

A guitar effects processor intended to be simple and easy to use. Features effects like distortion, echo, chorus and wah-wah, and integrates a MIDI converter. Detailed documentation is offered.

MIDI sequencer and notation editor for Unix-like systems.

An object-oriented class library for audio signal processing.

MOD tracker for X, similar to FastTracker. Includes a sample recorder and editor.

A sound editor for Linux.

MIDI player, converter to wav. Uses Gravis compatible patches and can play these through soundcards lacking their own patches.

Plug-in for playing Commodore 64 music (SID tunes) with XMMS. Requires libSIDPlay library (link given).