u can only midi out one sound as a time. if you layer 2 sounds u can midi both sounds out but there gonna play simutaneosly and there's no way to separate them. u got patches and layers. patches are the individual pad. layers are different pads layered on top of each other making a whole different sound. there still the same sounds just layered. your gonna either have to sample the sounds and play them out on the mpc or one track at a time in pro tools (as u said). i had a xl with a microkorg wit some piggyback cable's to make sampling from it real easy.
http://www.radioshack.com/sm-6-ft-gold- ... 02980.htmlconnect the piggyback end to the out of the microkorg (the other end will go to a mixer/etc as usual). with another rca connect one end to the piggyback and the other end to the record in of the mpc. more than likely at some point ur gonna sample and it makes it a breeze.