So i have tried just about everything with my problem with downloading cd's and burning them onto a cdr. It used to work fine couple of months ago, but recently the cd's will not play. I have tried using diffrent brands of cd's, diffrent colors, slowing down the burning process, and yet nothing has worked for me. Does anyone think that the laser in the cd player has weakned? I mean just yesterday some of the cd's would work, and when i tried to skip to the next track it got all messed up. Then i got out of the car, then turned the car back on and it worked. But today it will not work at all. If anyone has any suggestions please let me know!! I am getting realy pissed at my 850!!!!!! You can e-mail me at michaelwe14@hotmail.com