I'm just having a stab in the dark but I think these other (well educated and helpful) clowns are saying they don't know any details about IP-Bus.
I don't see the problem of adding external devices (CD/MD/DVD/Phono/Tape) to the empeg (and probably niether does the clown troupe!
). Especially if that is what you would use when you're not in the car.
Given time, there will be all sorts of adapters for control stick and such but first we have to really wait until empeg/sonic blue gie us an API.
____________________Murray 06000047