Load and unload SWF with FLV

Hi, I’m pretty new here and have been banging my head against the wall for awhile on this one. Here is the issue. I’ve got a SWF with two (for now) buttons on it that each load a SWF. Each of these will load fine if they are the first one pressed. Once one is pressed there are problems. If you try to go to the next one, the new SWF covers the one currently playing, but it will not load the FLV associated with it and the audio from the previous does not stop. You can see it all here:


And here is the code on the navigation:

var Xpos:Number = 130;
var Ypos:Number = 10;
var swf:MovieClip;
var loader:Loader = new Loader();

loader.x = Xpos;
loader.y = Ypos;


// Btns Universal function
function btnClick(event:MouseEvent):void {

var newSWFRequest:URLRequest = new URLRequest(“http://friendlyjoe.com/flash/swf/” + event.target.name + “.swf”);
loader.x = Xpos;
loader.y = Ypos;
// Btn listeners
safelift.addEventListener(MouseEvent.CLICK, btnClick);
gamestore.addEventListener(MouseEvent.CLICK, btnClick);

Any help would be greatly appreciated.