Stop video when going to another page

Hi I am new to Flash,

I am working on a website using the tutorial for Flash CS4.

I ran into a bit of a problem, I made my flash movie and everything was good. I added a welcome video with sound that plays when the user opens the website, my only problem is that when you click on the other pages the video and sound keep playing even if you see the other page.

How do I get that video with sound to stop once you go away fro the page and go to another page?

Any advice is welcomed.

PS: I can send you the swf. file if that helps.