Is it possible to make the player program 'remember' the volume with respect to the power source. I tend to listen to the empeg through my home system with it set to 0db and in my car at a much lower level.

I've notice that you have a status file in proc showing the current power source, but I have not had the chance to see if it changes while in the car. If it changes then it should be a simple matter to save the 'in-car' volume and 'home' volume somewhere.

Cheers
Steve