1、新建一个AS3.0文档，拖入一张图片到库，点插入，新建一个影片剪辑元件（取名：图片元件），再拖入图片， 2、点插入新建影片剪辑元件，拖入“图片元件”，然后随意做个几桢的动画。最后一桢把图片放大，或设置透明度等。 3、拖入图片动画到场景取实例名为“mc”,再新建一层AS代码层，复制以下代码贴上及可。

import flash.media.SoundMixer;
import flash.events.Event;
import flash.media.Sound;
import flash.net.URLRequest;
import flash.events.MouseEvent;
import flash.ui.ContextMenu;
import flash.ui.ContextMenuBuiltInItems;

stage.scaleMode = StageScaleMode.NO_SCALE;
stage.align = StageAlign.TOP_LEFT;

var menu:ContextMenu=new ContextMenu();
menu.hideBuiltInItems();
this.contextMenu = menu;

var sound:Sound=new Sound();
var sc:SoundChannel=new SoundChannel();
var position:Number;
var isPlay:Boolean;
var byteArray:ByteArray= new ByteArray();

sound.load(new URLRequest("http://img0.oldkids.cn/upload/2021/05/20/blog_260848287_20210520142951772.mp3 "));
sc = sound.play();
this.addEventListener(MouseEvent.CLICK,onClickHandler);
sc.addEventListener(Event.SOUND_COMPLETE,scCompleteHandler);
function onClickHandler(event:MouseEvent):void
{
isPlay = ! isPlay;
if (isPlay)
{
position = sc.position;
sc.stop();

}
else
{
sc.stop();
sc = sound.play(position);

}
sc.addEventListener(Event.SOUND_COMPLETE,scCompleteHandler);
}

function scCompleteHandler(event:Event):void
{

sc = sound.play();
sc.addEventListener(Event.SOUND_COMPLETE,scCompleteHandler);
}

this.addEventListener(Event.ENTER_FRAME, enterFrameHandler);

function enterFrameHandler(event:Event):void
{

SoundMixer.computeSpectrum(byteArray,true);
var ratio:Number = range(Math.round(byteArray.readFloat() / 1.414 * mc.totalFrames));
//var ratio:Number = range(Math.round((sc.leftPeak+sc.rightPeak)*.5 * mc.totalFrames));
mc.gotoAndStop(ratio);
}

function range(value:Number):Number
{
if (value>1)
{
return value;
}
else
{
return 1;
}
}

(注：您的设备不支持flash)