入门极好视频： http://www.enet.com.cn/eschool/video/flashas3/

《Flash CS3 AS3声音视频高级编程》共分为两章：第一章深入讲解了FLASH对于声音的编程，最后通过一个功能强大的MP3播放器进行演示，通过这一章的学习可以让你对于声音的处理有一个深入的掌握；第二章深入讲解了对于视频的处理，包括如何使用现有视频组件来控制视频。同时还讲了如何创建自己的控制外观。

声音示例：

[AS3.0编程教学]最全的声音控制方法
 http://jingyan.baidu.com/article/a948d651bc90a60a2ccd2e4c.html

视频示例： http://www.cuplayer.com/player/PlayerCodeCourse/2012/0914409.html

[Flex]NetStream动态加载视频利用SoundTransform控制音量

1. <?xml version="1.0" encoding="utf-8"?> 
2. <!-- http://blog.flexexamples.com.sixxs.org/2008/03/01/displaying-a-video-in-flex-using-the-netconnection-netstream-and-video-classes/ --> 
3. <mx:Application xmlns:mx="http://www.adobe.com.sixxs.org/2006/mxml" 
4.                 layout="vertical" 
5.                 verticalAlign="middle" 
6.                 backgroundColor="white" 
7.                 viewSourceURL="srcview/index.html" xmlns:local="*" 
8.                 initialize="init();"> 
9.  
10.     <mx:Script> 
11.         <![CDATA[
     
12.             import mx.controls.Alert;
     
13.             private var urlArr:Array=["http://221.122.36.143.sixxs.org/oa/video/1.flv", "http://221.122.36.143/oa/video/2.flv", "http://221.122.36.143/oa/video/p2.mp4"];
     
14.             public function init():void{
     
15.                 myVideo.urlArr = urlArr;
     
16.                 myVideo.total = 100000;
     
17. //              Alert.show("1==>>"+myVideo.urlArr.length);
     
18.             }
     
19.             
     
20.         ]]> 
21.     </mx:Script> 
22.  
23.     <local:mVideo id="myVideo"/> 
24.  
25. </mx:Application> 
26.  
27. 第二个文件  
28. <?xml version="1.0" encoding="utf-8"?> 
29. <mx:Panel xmlns:mx="http://www.adobe.com.sixxs.org/2006/mxml" 
30.           creationComplete="setTransformVolume();"> 
31.     <mx:Script> 
32.         <![CDATA[
     
33.             import mx.controls.Alert;
     
34.             import mx.events.SliderEvent;
     
35.  
36.             private var nc:NetConnection;
     
37.             private var ns:NetStream;
     
38.             private var nc2:NetConnection;
     
39.             private var ns2:NetStream;
     
40.             private var video:Video;
     
41.  
42.             [Bindable]
     
43.             public var urlArr:Array=null;
     
44.             [Bindable]
     
45.             public var total:Number=0;
     
46.  
47.             private var count:int=0;
     
48.             private var finished1:int=1; //1：播放正在进行；0：播放结束
     
49.             private var finished2:int=0; //1：播放正在进行；0：播放结束
     
50.  
51.             private var volumeTransform:SoundTransform;
     
52.  
53.             
     
54.             private function setTransformVolume():void{
     
55.                 volumeTransform=new SoundTransform();
     
56.                 slider.value = volumeTransform.volume;
     
57.                 slider.tickInterval = slider.snapInterval;
     
58.                 slider.liveDragging = true;
     
59.                 slider.addEventListener(Event.CHANGE, volumeChangeHandler);
     
60.                 init();
     
61.             }
     
62.             
     
63.             private function init():void
     
64.             {
     
65.                 Alert.show("" + total);
     
66.                 
     
67.                 var nsClient:Object={};
     
68.                 nc=new NetConnection();
     
69.                 nc.connect(null);
     
70.                 ns=new NetStream(nc);
     
71.                 ns.play(urlArr[count]);
     
72.                 ns.client=nsClient;
     
73.                 ns.soundTransform=volumeTransform;
     
74.                 ns.addEventListener(NetStatusEvent.NET_STATUS, myTest1);
     
75.                 
     
76.                 video=new Video();
     
77.                 video.name="video1";
     
78.                 video.width=uic.width;
     
79.                 video.height=uic.height;
     
80.                 video.attachNetStream(ns);
     
81.                 if (uic.getChildByName("video1") != null)
     
82.                 {
     
83.                     uic.removeChild(uic.getChildByName("video1"));
     
84.                 }
     
85.  
86.                 count++;
     
87.             }
     
88.             private function volumeChangeHandler(event:SliderEvent):void {
     
89.                 volumeTransform.volume = slider.value;
     
90.                 ns.soundTransform = volumeTransform;
     
91.                 ns2.soundTransform = volumeTransform;
     
92.             }
     
93.             private function init2():void
     
94.             {
     
95.  
96.                 var nsClient:Object={};
     
97.  
98.                 nc2=new NetConnection();
     
99.                 nc2.connect(null);
     
100.                 ns2=new NetStream(nc2);
      
101.                 ns2.play(urlArr[count]);
      
102.                 ns2.client=nsClient;
      
103.                 ns2.soundTransform=volumeTransform;
      
104.                 ns2.addEventListener(NetStatusEvent.NET_STATUS, myTest2);
      
105.                 
      
106.                 video=new Video();
      
107.                 video.name="video2";
      
108.                 video.width=uic.width;
      
109.                 video.height=uic.height;
      
110.                 video.attachNetStream(ns2);
      
111.                 if (uic.getChildByName("video2") != null)
      
112.                 {
      
113.                     uic.removeChild(uic.getChildByName("video2"));