http://www.sensomusic.com/news/ free soft. Very simple and powerfull for live performance. The creator's name is Olivier. He's very available for any request.
Audacity recording software *free* Audacity is a free audio editor. You can record sounds, play sounds, import and export WAV, AIFF, and MP3 files, and more. Use it to edit your sounds using Cut, Copy and Paste (with unlimited Undo), mix tracks together, or apply effects to your recordings. It also has a built-in amplitude envelope editor, a customizable spectrogram mode and a frequency analysis window for audio analysis applications. Built-in effects include Bass Boost, Wahwah, and Noise Removal, and it also supports VST plug-in effects. http://audacity.sourceforge.net/about.php?lang=en
Quartz Studio Free A free multitrack audio program. Free version lets you record 4 tracks, should be all we need for "prim" I suppose. http://www.digitalsoundplanet.com/SoftwareHouse/Products/Quartz_Studio/Studio_Free/studio_free.phtml
The Agnula Project A 100% free entire operating system dedicated to creating, editing and recording music. You kinda need a separate computer to devote to this but it's really excellent. It includes Audacity. http://www.agnula.org/