Do you have the latest version of the
Flash player installed? If so, try a different browser (Firefox / Opera / IE).
Also, how long did you wait when the video stopped? It may have just been buffering more video if the servers were slow.
EDIT: I tried the video in Opera after first reading your post, and got the sound fine. It played for more than 30 seconds, but my computer locked up when I tried to switch to full screen mode. After I rebooted, re-did some stuff I had open and replied to your post I tried again, and got no sound and a stop after about 10 seconds (didn't wait to see if it was just buffering). I thought there might have been a problem trying to start the video right away, while the browser was still trying to load all the thumbnail images below.
Anyway, I tried it in Firefox and got sound, but the server seemed to have gotten busier. It played for 10 seconds and stopped for awhile, then went 25 seconds and stopped again.
If you just let the video play through, you can copy it from your browser cache folder and play it in VLC Media Player, etc.
