first I could only play audio cd as root, and not as user. I tried several things, and the last thing I tried (at someone's suggestion) was chown $user /dev/sdb. After that, I couldn't play audio cd even as root anymore. On top of that, I lost the CD icon on my desktop (as user and root), and my machine won't recognize data CDs as user and root anymore. I don't know how to put it back and how to get CD to work. Help?