Okay I've just updated my M1330n to Ubuntu 8.04 with a fresh install. I've reinstalled LinDVD from the backup ISO that I burned to disc. It works great except when I try to make it the default DVD player. All I get is an error telling me /media/cdrom0 is unplayable.

Does anybody know how to fix this? There is an environment variable CDROMDEVICE. But I can't figure out how to use it.