Open your video in youtube>copy the URL>Press the little Insert/edit video button in the reply menu bar, second row>paste the url into the 'source' box and hit ok.
I agree with GregBale, I usually don't click hotllinks either, especially when there are many of them. For some reason, I checked one of yours.
I'm a tough customer when it comes to youtube videos, I have the patience of a two year old with them. Not entirely my fault, its a conditioned response from watching so much garbage by modelers/wanna be producers. I watched a part of one of yours, and I'd like to give you a thumbs up. You have an interesting persona for the medium, IMHO. You've put some time and thought into the productions. Your layout and what you are doing looks very cool, too.