A quick "how to" video on the USB port that is in many new GM (and other makes) vehciles. You can use any flash/thumb drive. This will allow you to use the radio controls built into youare car to control your music 1) make sure your vehicle is equipped with a USB 2) copy and paste music onto the drive TIP you can break them into folders for easier navigation. 3) plug drive into your vehciels USB port 4) enjoy your music