Im using AS3

I have 3 scenes ...

One is a 'links' page that I use to navigate to websites, a video and a gallery.

The gallery is on a scene of its on, on the links page I have a button that takes you to it, and starts it.

The gallery Im using isnt one I made myself ...

I need to stop it - but cant figure how.

When I am done with watching the gallery I want to navigate back to the links page, I can get that to happen - but the gallery - with music is still going in the background.

This is all the gallery code:

Code:
stop();
import flash.display.Loader;
import flash.net.URLRequest;
import flash.events.Event;
import flash.events.MouseEvent;
import fl.transitions.Tween;
import fl.transitions.easing.*;
import flash.filters.GlowFilter;
import flash.filters.DropShadowFilter;
import flash.utils.Timer;
import flash.events.TimerEvent;

	////

var myArray:Array = ["Fun at Cullburra Beach", "Safe & Protected at Tilbury Cove", "Holiday Time in the Shoalhaven", "Running Along Seven Mile Beach", "Beautiful Abraham's Bosom, Currarong" , "Family Time at Plantation Beach, Vincentia " , "Off Leash Fun at Moona Moona, Husskinson"];
var myGlow:GlowFilter = new GlowFilter(0xffffff,1,10,10,255);
var myShadow:DropShadowFilter = new DropShadowFilter(6);
var totalImages=7;
var imageNumber=1;
var myTimer:Timer = new Timer(4000);// 4 sec
var myLoader:Loader = new Loader();


	////

var myRequest:URLRequest = new URLRequest("Images/"+imageNumber+".png");
myLoader.load(myRequest);
addChildAt(myLoader,1);

	////

myLoader.contentLoaderInfo.addEventListener(Event.INIT, getImageInfo);
function getImageInfo(event:Event){
	var imgX=(stage.stageWidth- myLoader.width)/2;
	var imgY=(stage.stageHeight- myLoader.height)/2;
	myLoader.x=imgX;
	myLoader.y = imgY;
	myLoader.filters = [myGlow, myShadow];
    var myTween:Tween = new Tween(myLoader, "alpha", None.easeNone, 0,1,2,true);
		
	}
	////

myTimer.addEventListener(TimerEvent.TIMER, autoadvance);
function autoadvance(event:TimerEvent){
	if(imageNumber<totalImages){imageNumber++}
	else (imageNumber=1);
	reload();	
}
myTimer.start();

	////

rightButton.addEventListener(MouseEvent.CLICK, nextImage);
function nextImage(event:MouseEvent){
	if(imageNumber<totalImages){imageNumber++}
	else (imageNumber=1);
	reload();
		}
	////
	
leftButton.addEventListener(MouseEvent.CLICK, previousImage);
function previousImage(event:MouseEvent){
	if(imageNumber>1){imageNumber--}
	else (imageNumber=totalImages);
	reload();
	}
	
	////
	

function reload(){
	removeChild(myLoader);
	myRequest= new URLRequest("Images/"+imageNumber+".png");
	myLoader.load(myRequest);
	addChildAt(myLoader,1);
	myLabel.pictureLabel.text = myArray[imageNumber-1];
	var tweenLabel:Tween = new Tween(myLabel, "rotation", Bounce.easeOut,  360, 390,1,true)
	}
	
	////
var my_sound:Sound = new Sound();
my_sound.load(new URLRequest("honky_tonk.mp3"));
var my_channel:SoundChannel = new SoundChannel();
my_channel = my_sound.play(0,9999);

	////
	//stopping the timer.
	stage.addEventListener(MouseEvent.MOUSE_MOVE, stop_the_Timer);
	function stop_the_Timer(event:MouseEvent){
	myTimer.stop();
	}
	////resume timer
	stage.addEventListener(Event.MOUSE_LEAVE, resumeTimer);
	function resumeTimer(event:Event){
	myTimer.start();
	}


////////////