In my fedora 11 /dev/sr0 and /dev/sr1 are my dvd drives. The sr0 is on a ide and sr1 is on a sata connection. I would imagine that your primary dvd/cdrom is /dev/sr0 like mine.
/dev/sr0 /media/ udf,iso9660 noauto,user,ro 0 0
/dev/sr1 /mnt/ udf,iso9660 noauto,user,ro 0 0
This will mount your primary dvd/cdrom to media and your secondary device to mnt directory. Hope this helps