I was having the same problem with the USB music issue with 9.2, but I updated to 9.3 a couple of days ago and it's gone. NOW I'm having a different issue. When I end a phone call, the system doesn't switch back to what was playing on the radio. If I try to manually switch back, it does nothing. The only way to get back to the radio is to turn it off and then back on!
Edited by tpowel2, 26 March 2016 - 10:11 PM.