External AS3: Loading swf video

Question

I need to load a  swf file, which is video player and video. The swf loads but the video contained in it does not play and the video controls are dead too. What do I need to do to load a swf containing a flv video so the video plays?
I have a fla file connected by class to an external as file. Here is the external as file I am using:
package final {
    import flash.display.Loader;
    import flash.display.Sprite;
    import flash.display.MovieClip;
    //import flash.text.*;
    // URLRequest class resides in flash.net package
    import flash.net.URLRequest;
    import flash.events.*;
    import flash.errors.*;
    public class ControllingSwfs extends Sprite {
        public function ControllingSwfs() {
            var swfContainer:MovieClip = new MovieClip();
            var swfLoader:Loader=new Loader  ;
            swfLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, loaderCompleteHandler);
            function loaderCompleteHandler(evt:Event):void {
                addChild(swfLoader);
                swfContainer=swfLoader.content as MovieClip;
                swfContainer.x=10;
                swfContainer.y=20;
                addChild(swfContainer);
                //swfContainer.setText('SWF Loaded Properly');
                stage.addEventListener(MouseEvent.MOUSE_UP, unloadAssetHandler);
            function unloadAssetHandler(event:MouseEvent):void {
                swfLoader.unload();
                stage.removeEventListener(MouseEvent.MOUSE_UP, unloadAssetHandler);
            swfLoader.load(new URLRequest('kitty.swf'));
            addChild(swfLoader);

Answer 1

Now I am going to ask some dumb questions:
What is the difference between a script that loads an external image or a swf file into a new swf,
and a series of scripts that, when used together with a fla file, create a swf movie player (into which a target flv file gets played)?
Can a loader script load an that swf file that contains a movie in an ActionScripted movie player? If so, does it need access to the movie player scripts?
A little background:
My functioning ActionScript 3 movie player relies on 4 scripts —
1. a button manager script that controls play, pause, rewind, fast forward and stop
2. a media control script that extends flash.events.Event
3. a video script that extends MovieClip, targets the video to be played and controls and displays things like the scrubber
4. a main script that integrates all the above and is the Class for the fla file
Because I wanted to be able to load multiple flv movies in my flash swf, and I didn't know how to make the movie player do this, I thought loading the movies as swf files via a loader would be the solution.
If I could get my scripted movie player to be able to load and play different movies (as does the Adobe Media Player), that would be satisfying. (I am not relying on the AMP because I am doing this project for a class (which is now finished, but I'm still trying).
What I really need is working sample scripts so I can begin to understand how to assemble something like this. Oh, and the key is that I am required to do this all in external ActionScript 3, not on the timeline within the fla file.
Is there somewhere online that I can visit that creates purely scripted flash stuff?