sound problems with in custom sound class

im trying to make an Audio control Class... the class is working fine until i get to the add sound part..

i have two buttons, on and off.. when the movie loads, a looping background sound is playing, hitting off button will stop all sounds, the looping sound as well as the rollOver and Hit sounds...

how do i do this in my class code..

thanks

class SoundToggle extends Sound {

private var btnArray:Array;
private var lastClicked:MovieClip;
private var curBtn:MovieClip;
private var soundActive = true;

function SoundToggle(holder:MovieClip, btnLinkage:String, soundArray:Array, xSpace:Number, mySound:Sound, loopSound:Sound) {
//trace("soundToggle class instantiated");

// Init button array to keep track of all the buttons
btnArray = new Array();

//loopSoundToggle(true, "loopSound");
//_level0.mySound.attachSound("loopSound");
//_level0.mySound.start();

for (var i:Number = 0; i < soundArray.length; i++) {

// Attach button clip
var btn:MovieClip = holder.attachMovie(btnLinkage, "btn_" + i, holder.getNextHighestDepth());
//trace("btn" + btn);

// Store button's destination label
btn.myDest = soundArray[i];

// Set button text
setBtnText(btn, btn.myDest);

// Position button
positionBtn(btn, btn._width * i + xSpace * i);

// Position button on Stage
positionBtnStage(btn, (btn._width * i + xSpace * i + Stage.width / 2) - btn._width / 2, (Stage.height / 2) - btn._height / 2);

// Init button behaviour
initBtn(btn);

// Store a reference to the button to keep track of all the buttons
btnArray.push(btn);
}
}

private function setBtnText(btn:MovieClip, labelTxt:String) {
// Sets button label text
btn.labelTxtHolder.labelTxt.text = labelTxt;
}

private function positionBtn(btn:MovieClip, myXPos:Number) {
btn._x = myXPos;
}

private function positionBtnStage(btn:MovieClip, xPos, yPos) {
btn._x = xPos;
btn._y = yPos;
}

private function initBtn(btn:MovieClip, mySound:Sound, loopSound:Sound) {
// Initializes button behaviour
var thisClass = this;

// Sets On Button
for (var i:Number = 0; i < btnArray.length; i++) {
var theBtn:MovieClip = btnArray[i];

curBtn = btnArray[0];

//trace("curBtn " + btnArray[0]);

if (i == 0) {
curBtn.select = true;
lastClicked = curBtn;
curBtn.gotoAndStop("released");
curBtn.enabled = false;
} else {
curBtn.over = false;
curBtn.select = false;
}
}

btn.onRollOver = function() {
this.gotoAndPlay("rollOver");

//_level0.mySound.attachSound("rollOver");
//_level0.mySound.start();
}

btn.onRollOut = function() {
this.gotoAndPlay("rollOut");
}

btn.onRelease = btn.onReleaseOutside = function() {

_level0.playSounds("hit");
//_level0.mySound.attachSound("hit");
//_level0.mySound.start();

thisClass.lastClicked.gotoAndPlay("rollOut");
thisClass.lastClicked.enabled = true;
thisClass.lastClicked = this;
this.enabled = false;

trace(this + " this");

if (thisClass.lastClicked == _level0.btn_1) {
trace("sounds are off");

_level0.soundActive = false;
_level0.loopSound.stop();

} else {
trace("sounds are on");

if (soundActive) {
_level0.loopSound.start(0, 1000);
}
}
}
}

public function toggleBtns(val:Boolean) {
// Loops through button array & toggles each button
for (var i:Number = 0; i < btnArray.length; i++) {
var theBtn:MovieClip = btnArray[i];

// Ignore the currently selected button, it should always be disabled
if (theBtn !== lastClicked) {
theBtn.enabled = val;
}
}
}

public function playSounds(whichSound:String) {
if (soundActive) {
_level0.mySound.attachSound(whichSound);
_level0.mySound.start();
}
}

public function loopSoundToggle(val:Boolean) {
if (soundActive) {
_level0.loopSound.attachSound("loopSound");
_level0.loopSound.start();
}
}



}