SoundSpectrum with volume & preloader

1

I have some code that makes some crazy EQ’s when playing an mp3 file. Which isn’t the problem. I have to add a preloader to the code along with a mute/resume button. I’ve been trying for a few days to get it to work and have gotten no where. Anyone able to help. Need it for a Micro website for a very famous band, which I cannot name at this time.

Here’s the code:

package { 
   import flash.display.Shape; 
   import flash.display.Sprite; 
   import flash.media.Sound; 
   import flash.media.SoundChannel; 
   import flash.media.SoundMixer; 
   import flash.utils.ByteArray; 
   import flash.net.URLRequest; 
   import flash.events.*; 
   import flash.geom.*; 
   import flash.filters.*;
    
   public class SpectrumManager extends Sprite{ 
      private var _barArray:Array; 
	  private var _barArray2:Array; 
	  private var _lineArray:Array; 
	  private var _lineArray2:Array; 
      private var _sound:Sound; 
      private var _sc:SoundChannel; 
      private var _ba:ByteArray; 
      private var _numBars:int; 
       
      public function SpectrumManager() { 
         _barArray = new Array(); 
		 _barArray2 = new Array(); 
		 _lineArray = new Array(); 
		 _lineArray2 = new Array(); 
         _sound = new Sound(); 
         _sc = new SoundChannel(); 
         _ba = new ByteArray(); 
         _numBars = 62; 
         stage.frameRate=30; 
         makeBars(); 
		  
		  
         function makeBars():void { 
            for (var i:int = 0; i < _numBars; i++){ 
               var bar:Shape = new Shape(); 
			   var dropShadow:DropShadowFilter = new DropShadowFilter(6, 45, 0x00FF00, 1, 10, 10, 2, 1);
			   bar.graphics.beginFill(0xFF0099);
               bar.graphics.drawRect(-35,-75,1,40);
			   bar.graphics.endFill();
			   bar.filters = [dropShadow];
			   bar.y =  bar.height + 140; 
               bar.x = 60 + i*4; 
               addChild(bar); 
               _barArray.push(bar); 
			   
			   var bar2:Shape = new Shape(); 
               bar2.graphics.beginFill(0xFF0099);
               bar2.graphics.drawRect(-35,55,1,40);
        	   bar2.graphics.endFill();
			   bar2.alpha = 0.4;
			   bar2.filters = [dropShadow];
			   bar2.y = bar2.height + 140; 
               bar2.x = 62 + i*4; 
               addChild(bar2); 
               _barArray2.push(bar2); 
			   
			   var line1:Shape = new Shape(); 
			   line1.graphics.beginFill(0x66FFFF);
               line1.graphics.drawRect(-35,-90,1,2);
			   line1.graphics.endFill();
			   line1.y = bar.height+105; 
               line1.x = 60 + i*4; 
               addChild(line1); 
               _lineArray.push(line1); 
			   
			   var line2:Shape = new Shape(); 
			   line2.graphics.beginFill(0x66FFFF);
               line2.graphics.drawRect(50,75,1,2);
			   line2.graphics.endFill();
			   line2.alpha = 0.4;
			   line2.y = bar2.height+200; 
               line2.x = 62 + i*4; 
               addChild(line2); 
               _lineArray2.push(line2); 
			   
            } 
           playMusic();
         } 
          
         function  playMusic():void { 
            _sound.load(new URLRequest("so_what.mp3")); 
            _sc = _sound.play(0, 25); 
            var enterFrameController:Sprite = new Sprite(); 
            enterFrameController.addEventListener (Event.ENTER_FRAME, animateBars); 
         } 
          
         function animateBars():void { 
            SoundMixer.computeSpectrum(_ba, true, 2); 
            for (var i:int = 0; i < _numBars; i++){ 
               _barArray*.scaleY = _ba.readFloat(); 
			   _barArray2*.scaleY = _ba.readFloat(); 
			   _lineArray*.scaleY = _ba.readFloat(); 
			   _lineArray2*.scaleY = _ba.readFloat(); 
            } 
         } 
      } 
   } 
}

Credit will be given to those who are able to help.

Thanks very much,

Steve