Try EAC (Exact Audio Copy)
It's generally pretty good at ripping copy protected CDs.
If it won't work.. let me know the title and I'll try to find the copy protection scheme it uses and an appropriate app to rip it.
AFAIK, every copy protection scheme has been cracked.. so it's all a matter of finding which protection scheme it's using, and then the app to un-protect it

Er, I just re-read your post and noticed you're on a mac. Forget EAC then.. its for PCs. Most copy protections don't work on macs.. so thats odd that you are having trouble. Are you trying to rip it in iTunes?
Anyhow, just post the title and I'll see what I can do.
Josh