USB cable adapter. Connect your MP3 player to your factory stereo. Tired of listening to the radio and hearing commercials that seem to last forever, only to be followed by the same song you heard an hour ago. Get out your MP3 player and use this new AMI USB cable to listen to your music. This cable is used to integrate your Audi Music Interface with your MP3 player. The cable transmits audio signals only and no content will be displayed on the MMI screen.