Python Audio Tools are a collection of audio handling programs. These include programs for CD extraction, track conversion from one audio format to another, track renaming and retagging, track identification, CD burning from tracks, and more.
Extremely customizable bash script for ripping audio CDs. It gets album information from FreeDB. You can use any audio extraction software you like, with any encoder, and any related tools (for tagging, replaygain, etc...)
Jack is a text mode (optionally curses) CDDA extraction / MP3 encoder frontend with features like freedb query, continue mode, customizability and many more