I can across this place, http://factoryradioservice.com/ They fix ASK units. I was going to send in my FM tuner to have them add the AUX plug but ended up having a friend doing it.
'07 Audi A8 (w/ 20,000 miles)
'03 745Li (sold)
'03 Acura TL-S
'02 Infiniti QX4 (sold & new owner totaled it 4 hours later)