I went back to CarToys and looked for the person who's done empeg installs before. Just picked up my newly empeg-ised Audi, and it rules !
Only the head unit got replaced, and it's wired right thru the factory amp.

So, if you're in the Bellevue/Seattle area, go to CarToys of Bellevue and ask for Donovan. He knows the player.

Of course, i haven't checked out all the other functions of the car yet....hmm..