I really don't see the point of it muting, with my old Kenwood (now set as AUX) the CD changer pauses when a call comes in meaning you don't miss anything. I would like the empeg to pause too when the muting signal is present. I would then like the unit to play when the signal disappears. This would allow you to override the "mute pause" by just pressing the play button during a call.

I saw another thread about the ability to config this sort of feature through emplode.. Good Plan! You could have options to:

Mute
Pause
Reduce vol by XXX DB
Reduce vol to XXX DB