All, just burned a data DVD-R disk with a bunch of mp3s. My '07 LTZ Nav/stereo unit can't read it. I know it played a movie DVD I burned on the same type of disk two days ago, so it is not the media or the unit. Just wondering if I have to use CDs only to burn mp3 disks or there needs to be a specific file structure on a DVD for the unit to read it properly? Anyone?