Halo 3 Zanzibar Video Leak

Gametrailer.com has a 7 minute video of the Halo 3 beta build. The level is a Zanzibar remake that looks great. You can see the bubble shield in action which looks different than the huge ring we've seen in the docuvid from Bungie. Here's the link http://www.gametrailers.com/umwatcher.php?id=59795.

Lets just hope that music isn't in the final build.