Nice one. There is another easy way to download You Tube videos .....In fact just about any video from any scource ( almost ) , which is to download the free version of Real Player from here :
The social and portable media player to download videos from the web - www.real.com

The free version is good for just about any video download from porn to movies to youtube.....very easy and totally free . Been using it for 2 years and find it indispensible.