Audacity Portable is the popular Audacity audio editor packaged as a portable app, so you can take your audio files along with everything you need to edit and record on the go. You can place it on your USB flash drive, iPod, portable hard drive or a CD and use it on any computer, without leaving any personal information behind (freeware).

http://portableapps.com/apps/music_video/audacity_portable

James/Eurominuteman