This is a rather annoying bug. Say you're driving down the road in your car that has an iPod/iPhone connector built in. Well, you're talking on the phone but the battery is getting low. What do you do? You plug it into your cable of course. Uh oh, you start hearing "Bedrock" by Young Money playing over the voice of your girlfriend. You tell her to hold. You double tap your home button and swipe over the the music controls, but they're grayed out. Crap! You tell your girlfriend you have to go for a second because you can't hear her because you're iPhone started playing music over her. You can't hear what she says, so you just hang up. Then the music is routed to your stereo. GREAT... You call her back and she's pissed that you hung up on her. Yea, that pretty much sums it up. Stupid bug. It's repeatable too.