Fixed the download link
Don't know why you are having problems with the stream. I just checked it and it worked fine for me. You need to have the flash player installed in your browser but that's it. I live in the sticks and only have a 256k line. I size the vids so they work on my crappy line so I figure they should work on most other hook ups. The streaming video comes from a content delivery network MaxCdn. They have servers all over the world and you get the stream from the server closest to you. Could have been busy causing breaks for it to catch up. Be sure you haven't hit the quarter speed button or it will be really slow when I'm doing slo mo in the vid. If you want to further diagnose the problem shoot me a pm and I'll be glad to work the problem with you.
The download vid is mp4. You might need a codec. There are several on the net for free. Try coreavc's free trial. That is what I use. 15 bucks and its the fastest out there. 6 more bucks for their aac audio codec. A very nice package.
Griz