I have a 2006 Generation Macbook. Recently I have had problems with the computer reading audio CDs and burning audio CDs. The DVD player still reads DVDs, and I have visited the Genius Bar at the Mac Store with no help. The audio CDs sometimes take 5 or 6 times to show up on the desktop, and iTunes will not rip them. When burning audio CDs I get a Medium Write Error regardless of the program I use when burning...I have tried iTunes and Toast 9 Titanium. I have also uninstalled iTunes and reinstalled it but still have the same problem. Any suggestions? Thanks!