I have a MacBook Pro 2GHz Intel Core Duo, running OSX 10.6.4 and the latest iTunes. I used to burn audio CDs just fine and now it gives me error messages. The first error was a "Medium write error." The second error said, "The attempt to burn a disc failed. The disc can't be burned; it might be incompatible with this disc drive. Please try a different brand of disc or try burning at a slower speed." I've tried two discs: TDK and Mitsubishi. Both don't work. It starts initializing and then immediately jumps to finishing, then ejects the disc with that message. I updated to the most recent version of iTunes and I still get the same problem. Any ideas?? Thanks.