http://dokupuppylinux.co.cc/programs:audio_editing
https://ccrma.stanford.edu/software/snd/snd/snd.html author's site
Snd is a sound editor modelled loosely after Emacs. It can be customized and extended using either s7 (included in the Snd sources), Ruby, or Forth. Snd is free; the code is available via anonymous ftp as snd-11.tar.gz. Snd has a home page and a CVS repository, and is included in PlanetCCRMA.