Yamaha DTXpress/DTXplorer/DTXtreme

I have received Russ Miller's Drum Set Crash Course for the DTXpress, 
installed the drivers and the sequencing software and purchased the 
cable to connect my module to my computer. When I play any of the 
midi files, non of the drum parts are coming through my module??? I 
get piano, synths, etc. but no drums? I have checked every utility 
option that I could think of, but nothing.

Has anyone used this book and the accompanying CD? Can you give me 
any help? Are there supposed to be any audio tracks on the CD that 
play examples of the exercises in the book?

I'm in the dark and getting very frustrated. Any help that you can 
offer would be greatly appreciated!!!


Thanks, Cary H.