This is the first time I've noticed this happening/ever tried it that I can think of. I have my phone paired to my car's radio (Sony MEX-BT2800). Pandora works flawlessly. When I try using the stock music app, the audio comes through the handset. If I switch back to Pandora, the audio comes through the car radio. Any thoughts? Running Fresh Hero 2.1.2 with the vanilla music app.