DownUtube How to:
First open the page with the movie clip for example this be: http://www.youtube.com/watch?v=bn1-M5Ze0p8
then past this link to the program and then press "GET", if you are using English translation.
Then when the page downloaded, then click the list item in the list, so your movie clip starts downloading.
After you download, there must be a .flv file in the downloaded folder.
This file is the flash video file. It is the file you wanted.
Use "Media Player Classic" to play that file.
Media Player Classic is a great tool