Has anyone setup their iPhone so it can charge and play music? I am trying to get it setup so it can charge and play through the aux port. I am thinking of using a iphone dock that will charge through a power port then use the regular sync/charging cable. That will charge the iphone. Then connect the aux cable to the dock then to the aux stereo port. That should let it play my favorite list and charge it as well. I could also use the navigation app too. Has anyone else tried this?