As I have observed, the problem is that when MGPRS2 loads the WAV file
volume goes to half scale. Since the SBLive is not linear in volume
control this effectively kills the game play sounds. My solution is do a
<Alt> <Enter> when I get to the first MGPRS2 Options Menu, double click
on the Speaker Icon in the ToolTray, drag the WAV file volume control
back up to full, and return to MPPRS2. While the music volume is still a
bit out of balance, the WAV volume is much closer in intensity so that
you can adjust your speaker volume down so as not to be blown out of your
seat when the music plays. Hope this helps ...