Hi,
you can change volume for music and sound directly in the ini file for each game you want (or in command line)
ie:
[ daytona2 ]
SoundVolume = 60
MusicVolume = 150
command line : (part of the readme.txt)
Option: -music-volume=<v>
-sound-volume=<v>
Description: Specifies the volume of MPEG music produced by the Digital
Sound Board and the audio produced by the sound board in
percent. The default is 100, which is full volume, and the
valid range of <v> is 0 (muted) to 200. See the section on
audio settings for more information.
see also the readme.txt and supermodel web site
http://www.supermodel3.com/AdvancedUsage.html++