Cant u just mount the cd-rom and then just play the CD's you put in it.

command line: mount /dev/hdd (or whtever the cd-rom is in/dev, you can see that in the Hardwar Browser) /mnt/cdrom

then just put the CD in and an icon should appear on ur desktop, then just go to xmms, Add-Dir-/mnt/cdrom

i think that should work !