in case it helps, here are my file permissions:
lrwxr-xr-x 1 root cdrom 8 Feb 17 15:46 /dev/dvdrw -> /dev/hdc
brw-rw---- 1 root cdrom 22, 0 Mar 15 2002 /dev/hdc
my user is a group of the cdrom group
spitfire:~# ls -l /usr/bin/dvd*
-rwxr-xr-x 1 root root 21340 Aug 30 2004 /usr/bin/dvd+rw-booktype
-rwxr-xr-x 1 root root 19920 Aug 30 2004 /usr/bin/dvd+rw-format
-rwxr-xr-x 1 root root 28196 Aug 30 2004 /usr/bin/dvd+rw-mediainfo
-rwxr-xr-x 1 root root 156 Mar 4 20:04 /usr/bin/dvd-burn
-rwxr-xr-x 1 root root 9611 Mar 4 20:04 /usr/bin/dvd-encode
-rwxr-xr-x 1 root root 418 Mar 4 20:04 /usr/bin/dvd-iso
-rwxr-xr-x 1 root root 24386 Mar 4 20:04 /usr/bin/dvd-menu
-rwxr-xr-x 1 root root 11748 Aug 30 2004 /usr/bin/dvd-ram-control
-rwxr-xr-x 1 root root 160408 Mar 4 20:04 /usr/bin/dvd-slideshow
-rwxr-xr-x 1 root root 105836 Oct 30 01:00 /usr/bin/dvdauthor
-rwxr-xr-x 1 root root 943 Oct 30 01:00 /usr/bin/dvddirdel
-r-xr-xr-x 1 root root 4346 Dec 22 01:04 /usr/bin/dvdrip
-r-xr-xr-x 1 root root 5001 Dec 22 01:04 /usr/bin/dvdrip-master
-rwxr-xr-x 1 root root 10776 Oct 30 01:00 /usr/bin/dvdunauthor
-rwxr-xr-x 1 root root 7896 Nov 24 10:00 /usr/bin/dvdxchap
spitfire:~# ls -l /usr/bin/cd*
-rwxr-xr-x 1 root root 1648 Jan 10 03:55 /usr/bin/cdda2mp3
-rwxr-xr-x 1 root root 1612 Jan 10 03:55 /usr/bin/cdda2ogg
-rwxr-xr-x 1 root root 267980 Jan 10 03:55 /usr/bin/cdda2wav
-rwxr-xr-x 1 root root 43264 Nov 25 07:00 /usr/bin/cddb-slave2-properties
-rwxr-xr-x 1 root root 13976 Jun 1 2003 /usr/bin/cddbcmd
-rwxr-xr-x 1 root root 31128 Mar 1 2004 /usr/bin/cdparanoia
-rwxr-x--- 1 root cdrom 566344 Jun 25 2004 /usr/bin/cdrdao
-rwxr-xr-x 1 root root 133 Jan 10 03:55 /usr/bin/cdrecord
-rwxr-x--- 1 root cdrom 348556 Jan 10 03:55 /usr/bin/cdrecord.mmap
-rwxr-xr-x 1 root root 351404 Jan 10 03:55 /usr/bin/cdrecord.shm
lrwxrwxrwx 1 root root 14 Feb 21 17:30 /usr/bin/cdsound-recorder -> sound-recorder
-rwxr-xr-x 1 root root 135208 Feb 7 19:39 /usr/bin/cdxa2mpeg
I'm not sure if it's all correct, but it works!
