I downloaded the movie a looong time ago when it first came out. I dunno what happened, but suddenly the sound stopped working. I deleted it and then I got a new computer.
I have just now redownloaded the movie and am currently unpacking it. I know there is another file in there with "corrected" files in it but I wasn't aware of that so I'm going to test it out and see if it works for me.
But again, perhaps a separate thread is in order...