OK - one for the optical drive experts! (which I am not)
A while ago I removed the CD reader from my G4 tower and replaced it with a nice & fast CD burner (lite-on LTR-32125W).
Under 10.1.x it did not work with iTunes but did work with Disc Copy & the finder.
Since I upgraded to Jaguar the CD drive is no longer supported (almost the only liteon that isn't) and it's basically a CD reader again Grrrr!
The only way forward I can see is to Over-clock the drive so that it 'becomes' an LTR-48125W
http://www.ocworkbench.com/2002/liteon/media/p2.htm
So - Should I risk it?