I experimented with the phone in to use it as an AUX IN for Satillite radio, Ipod, etc.

Which technically DOES work, but it has serious limitations:
You have volume control, and that's about all.

1) You do not have pan/fader control. Same volume goes to all speakers
2) You do not have Bass / Treble control
3) Worst of all, you cannot change the screen to Nav, MPG, or anything else!

So with #1-3 above, the "phone" feature is useless for anything other than Tim's application. ( aka, a phone! ) ( hardwired, no BT )

-John