I can't open the video files. Maybe I don't have the necessary software. 
You'll need Windows Media Player 9. Although I have it installed, Firefox doesn't recognise it. So Internet Explorer might also be needed.
If you create two different profiles using two different e-mail addresses, you can watch both of them on a single day, I suppose? 
Yes, I was just thinking the same. It might work.
Perhaps the video is to be found in the "Temporary Internet Files" folder?
I'm checking it right now. I doubt it's there.