Right, that's fucking fascinating Guy. But since Red Dwarf X is not out on any of these amazing not yet existing formats, you might save the smug superiority complex over other people's consumer habits til then.
The documentary on the Blu Ray is very good anyway. It's a bit of an unfocused hodge podge, but loads of great material. For instance, when people hear the circumstances under which Dear Dave was created, and the reason it lacked a plot, they may find a new respect for it.