Ok so I havent been able to try this yet and i was just wondering if anyone else has. If you have the phone connected to a handsfree bluetooth system in a car and are also using the phone to play music via an aux input through the headphone jack will they both work? I am just wondering if the bluetooth connectivity will override the fact that you have something plugged into the headphone jack. I will be able to try this in a couple weeks when i get my car back, but wasjust curious if anyone else already has tried it.