Has anyone found a way to control the volume of BiaB's output, aside from selecting each instrument and decrementing its "volume" setting? That's very tedious -- especially since BiaB forgets what you've set every time it replays even the same file! Isn't there some global way to do this?

What I'm trying to do is balance the volume of a (fairly low output) guitar and BiaB, both playing through a since USB interface.