Sony Vegas Movie Studio 9 (Trial Version) is doing something really weird with my videos…?

Question by Allison: Sony Vegas Movie Studio 9 (Trial Version) is doing something really weird with my videos…?
Like, I edited it and everything and when I click “Make Movie”, I go through all the options and I don’t click anything strange, but then when it says its done I go to play it and its like, normal sound, but with the video in slow motion.
I have absolutely no idea how to fix this or what its doing and its done the same thing close to thirty times.
Please help.
x.x

Best answer:

Answer by mazzy☆
…………..

Know better? Leave your own answer in the comments!