ActionScript 3.0 :: Splash Page - Using UnloadAndStop To End All MovieClips

I currently have a splash page which uses a variety of tweens to make an animation of a character running. The splash page also has music playing in the background and a small skip button (located in the corner) which is given the instance name "reelButton". I want the splash page to link to a loading page (file name "loading_screen.swf") I have created which uses a black background and an animation of a skull rotating. When I press the skip button, it does navigate to the loading page but the character running from the splash page and the music is still playing. I know its because I need to use the unloadAndStop command to stop all the movie clips from the splash page. But even with this it still doesn't seem to work.

Below is the code:
var contentLoader:Loader = new Loader();addChild(contentLoader);
reelButton.addEventListener(MouseEvent.CLICK, reel);
function reel(event:MouseEvent):void {
loadURL("loading_screen.swf");
}function loadURL(url:String):void {
contentLoader.unloadAndStop();
var request:URLRequest = new URLRequest(url);
contentLoader.load(request);}