Well...there was a 1 in 400 chance, and I was the one.  On the TechEd DVD boxed set that contains all the multimedia presentations for the sessions, if you sort by name, and look for DEV389.htm, you'll see DEV387, DEV388, DEV400, waaah?!?  Turns out the launching .HTM file is missing from the DVD set for my session.  If you look on Disc 2 and dig for the DEV389_files folder, you can launch the default.htm from there and watch the talk with no problems.  But, for those using the menuing system (everyone) you'll get a broken link.  Bummer.