It works for me. This second. However, odds are it won't work in a minute or two, or from a different Mac in the house.
If you keep checking, sooner or (much much much) later, you'll see the trailers. But you never know when it'll work. It's like a really, really bad game, although I'm sure you could place bets in Vegas on its availability at any given time on a given Mac and possibly make some money that way....
Opening up QuickTime in the Firewall might or might not help. Dunno. It's all voodoo to me.