I cant get my phone to play music through my usb. I specifically just had a cd player put into my car with a usb jack on the front so I could plug my phone in and play my music as well as get a charge.( like how a flash drive would play music) I wanted to do this so I dont have cords everywhere. 1 to charge and 1 av cord to play music etc.. Is there a way to do this? I have tried changing my settings on the phone and still get nothing. When I turn on my music it just starts playing through the external speaker.