Flv sound continues after removeChild

I am trying to get a flv video to load on top of a parent swf. (A pop-up within flash). What I chose to do, was to put the flv player in a swf and try to load and unload it with the parent swf. This works great except when the child unloads, the music from the flv keeps playing. I am wondering if I have to do more than just a simple add and remove child.

Here is what I have to load the swf when a button is clicked:

 
var movieLoader:Loader = new Loader();

playMovie_btn.addEventListener(MouseEvent.CLICK, showMovie);

function showMovie(event:MouseEvent):void
{
	movieLoader.load(new URLRequest("memories_vid.swf"));
	addChild(movieLoader);
	
}

	movieLoader.x = -150
	movieLoader.y = -150 

Within “memories_vid.swf” I have a close button…


close_btn.addEventListener(MouseEvent.CLICK, closeWindow);

function closeWindow(event:MouseEvent):void
{
	gotoAndPlay(22);
}

Once it plays the outro animation into empty keyframes. Every attempt I have made to removeChild has not work. I still have the audio from the flv playing. How do I get “close_btn” to stop everything and to completely unload the swf? I’m sure there is something simple here that I just do not know. Thanks.