How Play Video Without Fading Sound

I justloaded some .avi animations (no sound) into Carousel and unfortunately the background audio fades out every time one of these videos is played. Is there a way to tell Carousel there is no audio associated with the .avi and to NOT fade down the background audio?

Thanks for any advice you guys can send me.

Jeff

Jeff Hamilton
Information Technologies Dept.
City of Champaign
102 N. Neil St.
Champaign, IL 61820