Alright. going from your video... the only thing that was incorrect was not waiting long enough.
thats all i could see that you were doing wrong. u had nothing in any other usb port. obviously the code was loading up which shows it was working. and u pressed eject fast enough. so well if u made another video showing doing every step correctly. maybe we could spot another error.
On another thought. Are u on 3.1.2? and did u do each step of the tutorial hence change the two files permissions to 777.
dont mean to ask alot it just narrows down the problems.