hi fran, one thing to check if the tracks are pretty old is to make sure they have channel 10 set as the drum channel, the channel 10 protocol was not in the original midi spec and older tracks may have them on another channel..secondly you cna get a Cakewalk INS file from the korgpa.com website.if he uses his computer sequencer to re-save all his tracks that should solve the prob..even he just uses the default GM or GM2 drum maps. to my knowledge (and i've been with midi pretty much from the start) there is no batch prog available to easily convert tracks within midi files to other channels. hope that helps
peace,out