Donny, your Trans Track brand midi files in question are truly GM (general midi) file format, right?

If indeed the Yamaha PSR9000 does support playback of GM format SMFs (as Dave suggests), then the songs (including correct drumkit mapping) should play 'correctly' on Donny's PSR9000. Apparently this is not the case with the inappropriate handclap sounds. Whether GS sounds better than GM is not really the issue here. More importantly is that Donny is hearing a totallly incorrect drum sound.

Is there possibly a button or page that needs to be accessed on the PSR9000 to put the keyboard into GM (general midi) mode?

Just a thought.

- Scott