Problems mounting a multi session CD.

Hi everyone. I'm having problems getting to the data part of a CD. It happens with a couple of CD's that I own. One of which is Diskworld2, and the other is Filter - the Amalgamut I know there's multimedia content on the drive but when I go to mount it I get a message, Could not mount device. The reported error was: /dev/cdrecorder: Input/output error mount: I could not determine the filesystem type, and none was specified I can play the audio though. My FSTab file has these settings. /dev/cdrecorder /media/cdrecorder auto ro,noauto,user,exec 0 0 Any Ideas? Jason