[ale] Capturing a youTube video

[johnmills at speakeasy.net (John Mills)]

ALErs -

I would like to capture the stream that is sent from playing a video 
(identified on its frame as from youTube). How can I do this so I can 
keep it, replay it locally, and/or send it to someone else?

I view it with Firefox on a variety of Linux installations.

Specifically the educational video served in 
[http://www.komando.com/videos/4-16.asp] would be helpful to _many_ of my 
friends.

TIA.

  - Mills