Xperia Z3 :: Bluetooth Working For Phone In Car But Not Media

Just got a Kenwood car stereo put in my car with Bluetooth, USB and calling support for phones. The calling feature works just fine but when I try and stream Pandora I can't hit play. It stays there, no sound and wont let it play. I hit the play button, it blinks as if it has been touched but then doesn't turn into the pause button and doesn't even start attempting to play music. If I go to Bluetooth and uncheck the media box and check it again it will start playing but three songs later or so and it stops playing, back to the original symptoms. I tried bypassing Bluetooth and using the USB but that audio gives me the same problems.