not exactly what you want, but i must recommend freewheeling, a live looping
program. after two years lurking on this list, the video tutorials made for it
convinced me to buy an extra computer and m-audio card.
the program has blurred most of my distinctions between improv, composition,
practice, performance, work, play, live, prerecorded.
--
dan easley (dan(a)burntpossum.com)
prabob