Just got a brand new Clarion VRX765VD 7" Touchscreen unit. Plays DVD-Rs, CD-Rs, +Rs, RWs, etc. The whole nine yards. The radio works and everything. Sound comes out perfectly. But when I put in my CD-R of mp3s (seperated by folder), the headunit detects all of them. I can browse through folders and choose different tracks and it will begin playing, but no sound. I try putting in a DVD-R full of mp3s and it doesn't even read the DVD-R, but it can read a DVD movie fine. Anyone know why my headunit plays mp3s but no sound comes out?