I have a 2003 Nissan Altima that I just recently bought. Everything is fine except the CD player. The radio works, but when I insert a CD, it says "CD Track 01" and blinks that message a few times, and then ejects the CD. I thought at first that it may be because the CD is burned, but I even tried some of my albums that I've bought and it doesn't seem to play anything. Help?