Mine can't burn CD audio either -- doesn't coaster the disc, though -- refuses to even start the burn, which is probably the best thing if it's not going to complete.
I'll research it further when I get more experienced with the drive -- all I've tried it with yet is Nero (including the June 30th release), DVD Decrypter and DVD X Copy.
It burns data CD's perfectly and so far DVD's seem OK -- have only tried RW's yet (the moment of truth will probably come when I stick a write-once in it...)
No problems with anything I've asked it to read.
It's not a priority with me, since the machine also has a 12-10-32S Plextor burner that works fine and there's a Lite-on in the other machine.
When (and if ) I've any useful results I'll post them for you.