Cakewalk is a sequencer... There is no such program to convert a wav file to midi! Send me the wav (doubek@eng.utah.edu)... I'd like to hear it, perhaps I can make some headway on it. I run an R8M with the power drums, dance drums, and ethnic percussion cards. I've been using it for sequencing and recording for 7 years now so maybe I can pick out what they are using (hopefully not from a card I don't have).
On loading sounds.... You have access to all the sounds available at any given time. When you plug a cartridge in in makes all the sounds available. There are, as I remember, 26 sounds on each add on cartridge. Move your cursor over to the "I" (for internal) before the sound number on the screen and hit up or down to access each cartridge. These sounds can then be saved into your custom patches so you can create mixes and matches of your favorite sounds. BTW, each cartridge also adds a demo song to the ROM play menu so you can hear a cheesy version of that cards capabilities.
Just wondering, where did you get these... I wouldn't mind finding a couple different ones myself that I don't have.