The files in an *.iso file can be viewed without burning the image into a cd / dvd.
Execute as root: mount -o loop -t iso9660 /path-to-iso-file /mnt/cdrom (or wherever the cdrom device is mounted to)
Execute as root: mount -o loop -t iso9660 /path-to-iso-file /mnt/cdrom (or wherever the cdrom device is mounted to)