Just found this dj music sampler in development: <http://www.york.ac.uk/~ph116/freestyle.html> It has real-time pitch control -- too cool! Only other apps I've found that can do this are Snd (you have to record output with an external program, like paudio) and Dynamic, GUI CD player that can play CDs backward, <http://www.cse.unsw.EDU.AU/~flatmax/dynamic/dynamic.html> (last time I tried using this, the sources were a mess).
