I'm having trouble burning a cd. It won't let me burn any of the songs I bought (i imported them from cd's).... iTunes help is of no help. The cd i'm using is a Maxell CD-RW 700mb. Also, it needs to be a mp3 cd. Any help would be much appreciated! Oh yeah, i'm using a powerbook G4 1.5Ghz with tiger, and i have all the updates.