Well, to bring you another first(?), it looks like the forthcoming session #21 of the World's Largest Dungeon will feature live audio casting to a small group of experimentalists. If you're interested, see: Wonders of Technology
Here's a question for you: If a Dwarf is blind can he still function?
e.g. your interpretation from the SRD of:
"Darkvision: Dwarves can see in the dark up to 60 feet. Darkvision is black and white only, but it is otherwise like normal sight, and dwarves can function just fine with no light at all.