Auto stereo system wont recognize

I purchased a Clip mp3 player 4gb and used Rhapsody to download from my computer.  All the downloads sound fine on the clip, however, when I plug the line-in usb into my Sync system in my car it gives me a error that there is no media.

Any ideas?

Unplug the device,

Navigate to Settings> USB Mode> MTP.

Then try connecting again.