Check these out, here it shows the difference between player 1 and player 2

Player 1 is a midifile played with the standard Mediastation sounds

Player 2 is a midifile played with GM-giga files.

First half of these MP3's is player1, 2nd half is player2
http://tastenpoint.at/downloads/demo/oxi1.mp3 http://tastenpoint.at/downloads/demo/dt-schlager.mp3

And an extra audio style recording. (tough i expect that only the drums are audio.
http://tastenpoint.at/downloads/demo/sunny1.mp3