need to debug an in issue but ash's blog is down

I have 4 possible videotextures to use in my puzzle game. After you win and try to select a different puzzle it doesn’t load the new video. I think I just need the code to close the video that’s currently in use before the new game is loaded.

I’m pretty sure I read about it on Ash’s blog but it’s down at the moment. Does somebody know how to do it?