If you don’t  have a YouTube converter mp4 app on your computer you should go to websites like http://www.youtube.com/watch?v=IRY4jDAexdk install one as soon as possible. These YouTube converter mp4 applications will let you download any movie or video on YouTube and convert it into an mp4 that can be stored on any computer.  If you are worried about getting into legal trouble using this software you have nothing to worry about provided the movies and videos being downloaded are for your own personal use and not shared on the Internet. With this software you will never have to spend money on another movie download again so have fun using the software.