Some great free max/MSP stuff:

I was researching Elastic~, the msp external which costs GBP20 and uses the same pitch and time algorithm as Ableton Live, Cubase, etc...

BUT:

I found some awesome stuff, including a similar external AND a max/msp clone of an MPC 2000...


http://www.cycling74.com/twiki/bin/view/Share/MattijsKneppers

GO MAX/MSP!