I haven't tried installing your su package yet, penguinbait, but I did try fatalsaint's question, su is showing up in "/bin/su" instead of "/usr/bin/su". So, I adapted that long command line to reflect this and k3b ran.

I don't have my burner with me (at work right now), but tonight, I'm going to try to set up a symlink from /usr/bin/su to /bin/su and see if that fixes everything... including detecting my burner. It was detected with cdvdtools, but not this package with k3b. (Though, when I set the tablet to host mode, the drive does respond by spinning up.)