Thanks to you both for your replies, they were both helped indirectly.........for anyone who is interested, here is the solution...........
I looked in mandrakes configuration tool in the hardware section and found that my cdrom (actually dvd drive) was in /dev/hdd, not /dev/hdc as I had thought. So when I went to mount I typed mount -t iso9660 /dev/hdd /mnt/cdrom2.........that seemed to mount the dvd drive....I could see the music files with ls /mnt/cdrom2. Then used the mandrake config tool to add the mnt point /mnt/cdrom2 to the fstab file (do this in the hartdware section of the mandrake config tool).
I rebooted and am now, somehow...I' m listening to the cd I have in the dvd drive.........Beatles - white ablum - still excellent after, what 25 years or so.
I wonder where linux will be 25 years from now?