IMac won't accept CDs

Question

From what I've read about on the forums, I'm not the only person experiencing problems with their Superdrive. I've had the problem for a while now but it's getting on my nerves and I need to do something about it.
My G5 Imac is probably about two years old now and late last year the Superdrive stopped accepting CDs. This of course means I can't import music discs into Itunes anymore.
However it will accept data CDs. For instance, it successfully read and imported a World of Warcraft CD a few weeks ago.
Any ideas or suggestions as to what I could do to get the Superdrive working as it should be without spending a few hundred pounds getting a brand new one installed?

Answer 1

"When I open up Disc Utility the only items listed in the left hand window are
149.1 GB WDC WD1600J
and
Macintosh HD
There is nothing else listed."
Nothing else is suppose to be listed if you have no other HDs (external or internal).
Click on the Macintosh HD to repair permissions.
Instructions:
Save and/or quit your applications & doucuments
Go to Applications>Utilities Folder
Click Disk Utility
Click the Volumn (HD) that you want to check.
Click the Repair Disk Permissions button. (Don't worry about verifying)
At the bottom of window when the repairs have finished, you will see the “most important thing”:
Permission Repairs Complete
The previliges have been repaired or completed on the selected volumn.
Restart your computer.
**Same directions are also in the OS Mac Help Menu.**
==================
Repairing permissions from the Tiger DVD
Boot up from your Tiger Install DVD while holding down the "c" key.
Select the language you wish to use, and then choose "Disk Utility" from the menu bar.
Your HD should appear in a panel on the left hand side of the window which opens. Select it and then click on the "repair disk" button in the right hand section of the window.
If Disk First aid is able to complete the repair now click on the "Repair permissions" button.
Once this process has been completed restart your computer.
http://docs.info.apple.com/article.html?artnum=25751 About Disk Utility's Repair Disk Permissions feature
TIP-You should Repair Permissions:
After installing and/or updating an OS (Operating System).
After installing software.
After CD/DVD burnings.