Quote: "How can i stop this, so that i have to watch till' the end of the video? "
Easy, don't click the left mouse button.
Sorry, but I couldn't help myself.
Seriously Justin, I don't know the answer because I never could get AVIs to work right for me.
I wish I could help, but I am sure that once the user does it the first time, then they won't do it again if they want to see the whole thing.
It's actually nice to have a way to exit it early.
Otherwise, we would be forced to watch it over and over every time we play the level.
The user will catch on, so I wouldn't worry about it.