How do I charge a car MP3 Player?

If I use a data cable to charge my droid in my car, will it sync the mp3 player with the car?

• It's an htc incredible, and the car's usb port says ipod on it, will it only sync with an ipod?

• Answer:

  if it is a after market cd player there is a 95% chance the answer is no most everything is made to sync this the iphones or ipod but also most of them have a aux cable that you can play your music but you control it off the phone and not the cd player