Thanks for posting carl.
One thing needs to be said, UrlSnooper is really designed for the super sneaky sites that try to hide streaming media urls, and is probably best considered an advanced tool for power users. It won't actually record streams for you, you need to use another program to do the actual recording.
What UrlSnooper does is find the hidden urls by actually scanning network traffic live as a streaming media file is loaded and played by any program.
IF all you want is to record a youtube video, there are much easier ways to do it, see here for more info: http://www.donationc...ex.php?topic=13013.0