Getting FLV to stop playing when user clicks on nav button

Question

I have a portfolio_mc that is inside of a content_mc (stage->content_mc->portfolio_mc). There are 3 buttons that take the user to an appropriate frame designated by a frame label and this loads up an FLV. The problem is that when I click on any of the navigation buttons on the main timeline, the FLV that is currently playing, is still playing (I can hear the audio). So I need to figure out how to stop this.
Here is the code used for controlling the buttons in the motion_mc timeline:
stop();
var naviArr:Array = new Array(btn01, btn02, btn03);
btn01.addEventListener(MouseEvent.CLICK, navigate);
btn02.addEventListener(MouseEvent.CLICK, navigate);
btn03.addEventListener(MouseEvent.CLICK, navigate);
btn01.buttonMode = true;
btn02.buttonMode = true;
btn03.buttonMode = true;
function navigate(event:MouseEvent):void
switch(event.target){
   case btn01:trace("video01");
   gotoAndPlay("video01");
   handleBtn(btn01);
   break;
   case btn02:trace("video02");
   gotoAndPlay("video02");
   handleBtn(btn02);
   break;
   case btn03:trace("video03");
   gotoAndPlay("video03");
   handleBtn(btn03);
   break;
function handleBtn(btn:MovieClip):void
   for(var i:uint = 0; i<naviArr.length; i++){
      if(naviArr[i] == btn){
         naviArr[i].removeEventListener(MouseEvent.CLICK, navigate);
         naviArr[i].buttonMode = false;
      }else{
         naviArr[i].addEventListener(MouseEvent.CLICK, navigate);
         naviArr[i].buttonMode = true;     

Answer 1

I really like your layout it is very cool looking.
You have it all set up just right. KGlad is right you don't even need to embed the flvplayback controls in another movieclip. I think the reason I had them in movieclips was another designer had them all set up that way and at the time I didn't want to mess with them. =P
At the beginning of your navigate function before you drop into the switch statement just put this in.....
function navigate(event:MouseEvent):void
    if(movie != null) //anytime there is something called movie on in scope when we navigate tell it to stop.
        movie.stop();
switch(event.target){
   case btn01:trace("video01");
   gotoAndPlay("video01");
   handleBtn(btn01);
   break;
   case btn02:trace("video02");
   gotoAndPlay("video02");
   handleBtn(btn02);
   break;
   case btn03:trace("video03");
   gotoAndPlay("video03");
   handleBtn(btn03);
   break;
That should do it for you.