Watch this now, before it's pulled down: http://blackandchrome.wordpress.com/.
UPDATE: Yep, it came down a day later! Hope you got a chance to watch it. I hadn't seen the movie before I watched it. I did not feel any need for the dialog I was missing; there wasn't much, anyway. The black and white was thrilling.
One can't help wondering who posted this. Since they clearly had access to the separate music, SFX and dialog tracks, it was an inside job. My guess is it would not have happened without the blessing, or contrivance, of Mr. George Miller himself. Thank you, sir!