Swf keeps playing when I move webpage...

New to this and using Flash CS4/AS3 to build simple website...and everything works fine apart from the swf movie keeps playing when I move to another page.

I am using MC buttons to go to labels on a timeline in a MC.
On the time line 'videos' I dragged on UIloader to play a swf of a video. My problem is that when I go to another page (along the timeline), 'home' or 'contact' etc, the swf is still playing from the 'Videos' section. You can't see it of course but can hear the sound. If I click back to 'Video' the swf starts to play again over the first play.
I have stop action on timeline above each different section, but this just stops all the pages from cycling.

Hope this makes sense...I'm just learning this stuff from tutorials etc
I guess I need to find some way to stop it playing when I go to the other pages, but I am stumped...

below is the code i'm using for the buttons.

function btn1Over(event:MouseEvent):void {
btn1.gotoAndPlay("over"); }

function btn1Out(event:MouseEvent):void {
btn1.gotoAndPlay("out"); }
function btn1Click(event:MouseEvent):void {
btn1.gotoAndPlay("click");
MovieClip(parent).allPages.gotoAndPlay("home");
}

btn1.addEventListener(MouseEvent.ROLL_OVER, btn1Over);
btn1.addEventListener(MouseEvent.ROLL_OUT, btn1Out);
btn1.addEventListener(MouseEvent.CLICK, btn1Click);