Car Audio Tool

I would like to be able to send and receive information from a car audio player that is connected via Bluetooth (AVRCP)


For example, it would be nice to be able to send Track, Artist and Album information to the audio player.  Also, when you press "Next Track" on your car radio, it would be nice if you could capture that and then act accordingly.


As an example, the IHeartRadio app is able to send information to a car stereo and it is also  able to change channels via the car stereo.