url request not working properly - video does not stop as3 - actionscript-3

Question

I created an information kiosk on flash but I got a problem that is really annoying on loading my contents externally. I have exported all of my swf files and created a unique swf to load everything on it with the main menu on top. The main problem is streaming a video from youtube. It loads perfectly but when i navigate to another page, the page changes but the video does not stop if it has been played once.(the sound keeps playing). Here is my code:
loader1.fla:
// Container
var pageLoader:Loader = new Loader();
// Url Requests
var loadRequest1:URLRequest = new URLRequest("basics1.swf");
var loadRequest2:URLRequest = new URLRequest("climatechange.swf");
// Initial Page Loaded
pageLoader.load(loadRequest1)
addChild(pageLoader)
// Button Functions
function goHome (e:MouseEvent):void{
pageLoader.load(loadRequest1)
addChild(pageLoader)
}
hpage.addEventListener(MouseEvent.CLICK, goHome);
//go to climate change page
function climatePage (e:MouseEvent):void{
pageLoader.load(loadRequest2);
addChild(pageLoader);
}
climatep.addEventListener(MouseEvent.CLICK, climatePage);
climatechange.fla:
Security.allowDomain("http://www.youtube.com")
// load video
var pageLoader:Loader = new Loader();
// Url Requests
var loadRequest1:URLRequest = new URLRequest("overviewvideo.swf");
// Intial Page Loaded
pageLoader.load(loadRequest1)
addChild(pageLoader)
overviewvideo.fla:
/*youtube video*/
var player:Object;
var loader:Loader = new Loader();
var context:LoaderContext = new LoaderContext();
context.checkPolicyFile = true;
context.securityDomain = SecurityDomain.currentDomain;
context.applicationDomain = ApplicationDomain.currentDomain;
loader.contentLoaderInfo.addEventListener(Event.INIT, onLoaderInit);
Security.allowDomain("http://www.youtube.com")
loader.load(new URLRequest("http://www.youtube.com/v/6s8iiIFgPMU&list=PL9C6D9D2AF8999F85&index=12"));
function onLoaderInit(event:Event):void {
addChild(loader);
loader.x= 40;
loader.y=130;
loader.content.addEventListener("onReady", onPlayerReady);
loader.content.addEventListener("onError", onPlayerError);
loader.content.addEventListener("onStateChange", onPlayerStateChange);
loader.content.addEventListener("onPlaybackQualityChange", onVideoPlaybackQualityChange);
}
function onPlayerReady(event:Event):void {
// Event.data contains the event parameter, which is the Player API ID
trace("player ready:", Object(event).data);
// Once this event has been dispatched by the player, we can use
// cueVideoById, loadVideoById, cueVideoByUrl and loadVideoByUrl
// to load a particular YouTube video.
player = loader.content;
// Set appropriate player dimensions for your application
player.setSize(480, 260);
}
function onPlayerError(event:Event):void {
// Event.data contains the event parameter, which is the error code
trace("player error:", Object(event).data);
}
function onPlayerStateChange(event:Event):void {
// Event.data contains the event parameter, which is the new player state
trace("player state:", Object(event).data);
}
function onVideoPlaybackQualityChange(event:Event):void {
// Event.data contains the event parameter, which is the new video quality
trace("video quality:", Object(event).data);
}
Can anyone help? I'd be glad if someone can help me out. Thank you

Answer 1

Before you load a new swf into the loader, you need to first call:
pageLoader.unloadAndStop();
Attempts to unload child SWF file contents and stops the execution of commands from loaded SWF files. This method attempts to unload SWF files that were loaded using Loader.load() or Loader.loadBytes() by removing references to EventDispatcher, NetConnection, Timer, Sound, or Video objects of the child SWF file. As a result, the following occurs for the child SWF file and the child SWF file's display list:
Sounds are stopped.
Stage event listeners are removed.
Event listeners for enterFrame, frameConstructed, exitFrame, activate and deactivate are removed.
Timers are stopped.
Camera and Microphone instances are detached
Movie clips are stopped.
Docs at Adobe