Cdrom is mounted, but where?

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http://askubuntu.com – A Nautilus folder will be opened automatically when inserting a CD in a drive. It is under Devices with name Audiodisk. As long as the files are accessed via Nautilus everything is fine. The problem is that I can not find the cdrom files from the File System. This means that I can not access the cdrom files directly from applications. This is a problem in 12.10. I have checked all subfolders in /media, /mnt and /cdrom and didn't find the cdrom content there. mount and df commands do not show anything related to cdrom. In /etc/fstab there is a line /dev/scd0 /media/cdrom0 udf, (HowTos)