Sounds类 外部调用音乐示例有三个音乐sound/musicNum 可以控制声音大小

package 

{

	import flash.display.*;

	import flash.media.*;

	//import fl.controls.*;

	import fl.events.*;

	//import fl.controls.*;

	import flash.events.*;

	import flash.net.*;

	import flash.text.*;

	import flash.ui.*;



	public class Sounds extends Sprite

	{

		private var soundChannel:SoundChannel;

		private var _soundTransform:SoundTransform;

		private var volumeNum:Number;

		private var url:String;

		private var request:URLRequest;

		private var sound:Sound;

		//private var myLabel:Label;

		//private var thickness:Number = 1;

		//private var mySlider:Slider;

		private var flag:Boolean;

		private var count:int;

		private var randomNum:int;



		public function Sounds(randomNum:int)

		{

			this.randomNum=randomNum;

			volumeNum = 1;

			recursion();

			url = "sound/music" + randomNum + ".mp3";

			request = new URLRequest(url);

			sound = new Sound  ;

			sound.load(request);

			sound.addEventListener(Event.COMPLETE,completeHandler);



			/*myLabel= new Label();

			myLabel.autoSize = TextFieldAutoSize.LEFT;

			myLabel.text = "";

			myLabel.move(100, 30);

			addChild(myLabel);



			mySlider = new Slider();

			mySlider.snapInterval = 1;

			mySlider.minimum = 0;

			mySlider.maximum = 100;

			mySlider.value = 100;

			mySlider.addEventListener(SliderEvent.THUMB_DRAG, thumbDragHandler);

			mySlider.move(myLabel.x, myLabel.y + myLabel.height);

			addChild(mySlider);*/



			//this.addEventListener(KeyboardEvent.KEY_DOWN,onkeyDown);

		}



		public function onkeyDown():void

		{

			if (flag)

			{

				mute();

				recursion();

				url = "sound/music" + randomNum + ".mp3";

				trace(url);

				request = new URLRequest(url);

				sound = new Sound  ;

				sound.load(request);

				sound.addEventListener(Event.COMPLETE,completeHandler);

			}

		}

		

		public function mute():void

		{

			soundChannel.stop();

		}

		

		public function _play():void

		{

			soundChannel = sound.play();

		}



		private function recursion():void

		{

			randomNum = Math.round(Math.random() * 2 + 1);

			if (count != randomNum)

			{

				count = randomNum;

			}

			else

			{

				recursion();

			}

		}



		private function completeHandler(e:Event):void

		{

			sound.removeEventListener(Event.COMPLETE,completeHandler);

			flag = true;

			_play();

			_soundTransform = new SoundTransform(volumeNum,0);

			addEventListener(Event.ENTER_FRAME,enterFrameHandler);

		}



		private function enterFrameHandler(e:Event):void

		{

			soundChannel.soundTransform = _soundTransform;

		}



		/*private function thumbDragHandler(e:SliderEvent):void

		{

			myLabel.text = e.type + ": " + thickness;

			thickness = e.value;

			_soundTransform.volume = e.value / 100;

		}*/



	}



}