Ampache - Open Source, web-based audio file manager which allows users to view, edit, and play their audio files (MySQL and PHP).
Audacity - A free, open source software for recording and editing sounds in Linux, Mac OS X, and other operating systems.
MP3 Book Helper - Provides Mp3 and Ogg Vorbis tags editing and file renaming functions. (Delphi) [Windows]
MPEG4IP: open source MPEG4 package - MPEG-4 AAC audio encoder, MP3 encoder, MPEG-4 video encoders, MP4 file creator and hinter, IETF standards-based streaming server, MPEG-4 player. Mostly Linux-based.
Open Sound World - Open-source programming environment that allows musicians sound processing in response to real-time control.
orDrumbox - Real-time drum machine and audio sequencer written in Java. Online demo, full download, and user manual.
SND - Snd is a sound editor that can accommodate any number of sounds and can be customized and extended using either Guile, Ruby, or Forth.
Ubuntu-Studio Project - A site for musicians wishing to use Ubuntu-Linux as their Digital Audio Workstation.
Zinf - An open source audio player for Linux and Win32, supports MP3, Ogg/Vorbis, WAV and Audio CD playback, SHOUTcast/Icecast HTTP streaming, RTP streaming, with a powerful music browser, theme support and a download manager.
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