Need Help Unloading movies Help Please!

New to AS3.0 I have multiple movies loding in a movie. I am trying to unload a movie with sound. I have tried just about everything that I know which isn’t saying much:) I have been trying to figure this out for about 8 hours now maybe longer. How do you unload the movie and delete all sounds, caches etc.

Please Help!!! Thanks,

var myMovie:zMovies = new zMovies();

function showImg1(evt:MouseEvent):void {

  removeChild(getChildByName("myMovie"));
img_ldr.source = "zFlashMovs/hero01.swf";

}
img01_btn.addEventListener(MouseEvent.CLICK, showImg1);

function showImg2(evt:MouseEvent):void {

//addChild(new zMovies()).name = "myMovie";
addChild(myMovie);
    //img_ldr.source = "zFlashMovs/hero02.swf";

}
img02_btn.addEventListener(MouseEvent.CLICK, showImg2);

function showImg3(evt:MouseEvent):void {
img_ldr.source = “zFlashMovs/hero03.swf”;
}
img03_btn.addEventListener(MouseEvent.CLICK, showImg3);

function showImg4(evt:MouseEvent):void {
img_ldr.source = “zFlashMovs/hero04.swf”;
}
img04_btn.addEventListener(MouseEvent.CLICK, showImg4);

function showImg5(evt:MouseEvent):void {
img_ldr.source = “zFlashMovs/hero05.swf”;
}
img05_btn.addEventListener(MouseEvent.CLICK, showImg5);

btnUltra.addEventListener(MouseEvent.CLICK, UltraBtnFunction);
function UltraBtnFunction(event: MouseEvent) {
var request:URLRequest = new URLRequest(“http://www”);
navigateToURL(request, “_parent”);
}

btnRecentNews.addEventListener(MouseEvent.CLICK, RecentNewsBtnFunction);
function RecentNewsBtnFunction(event: MouseEvent) {
var request:URLRequest = new URLRequest(“http://www”);
navigateToURL(request, “_parent”);
}

btnRecentMedia.addEventListener(MouseEvent.CLICK, RecentMediaBtnFunction);
function RecentMediaBtnFunction(event: MouseEvent) {
var request:URLRequest = new URLRequest(“http://www”);
navigateToURL(request, “_parent”);
}

btnAthletes.addEventListener(MouseEvent.CLICK, AthletesBtnFunction);
function AthletesBtnFunction(event: MouseEvent) {
var request:URLRequest = new URLRequest(“http://www”);
navigateToURL(request, “_parent”);
}

btnAllThingsZoot.addEventListener(MouseEvent.CLICK, ATZBtnFunction);
function ATZBtnFunction(event: MouseEvent) {
var request:URLRequest = new URLRequest(“http://www”);
navigateToURL(request, “_parent”);
}

btnCustomerService.addEventListener(MouseEvent.CLICK, CSBtnFunction);
function CSBtnFunction(event: MouseEvent) {
var request:URLRequest = new URLRequest(“http://www”);
navigateToURL(request, “_parent”);
}

btnContact.addEventListener(MouseEvent.CLICK, ContactBtnFunction);
function ContactBtnFunction(event: MouseEvent) {
var request:URLRequest = new URLRequest(“http://www”);
navigateToURL(request, “_parent”);
}