I know installing LSDVD resolved my issue but, technically, the package required was probably something LSDVD calls, most likely LIBC6 or LIBDVDREAD4. I don't know whether there would be patent or other issues by packaging them with Debian?
- Bug#878417: rygel: Rygel "Pre-reqs" on Debian - LSDVD i... Harrison
- Bug#878417: The "most probable" packages actually ... Harrison
