string FilePath = listView.SelectedItems[0].Tag.ToString();//视频的初始路径
           axWindowsMediaPlayer_Video.URL = FilePath;//axWindowsMediaPlayer是播放器控件名字
          axWindowsMediaPlayer_Video.Ctlcontrols.play();

------解决方案--------------------
C# code

工具箱右击 选择项 COM组件 找到window media player  添加 然后在窗体添加这个控件

            this.axWindowsMediaPlayer1.URL = "G:\\film\\你若成风.mp3";
           this.axWindowsMediaPlayer1.Ctlcontrols.play();//播放
            this.axWindowsMediaPlayer1.Ctlcontrols.pause();//暂停

------解决方案--------------------
探讨

引用:

怎么只能放音乐呀！！！如果放视屏文件怎么办呀？？？
this.axWindowsMediaPlayer1.URL = "G:\\film\\你若成风.mp3";\\把路径改成视频路径不就好了


------解决方案--------------------
HTML code

<SCRIPT type=text/javascript>
var IsOpenMusic = true;
function MusicOperate()
{
  var obj = document.getElementById("music");
  var wma = document.getElementById("wma");
  if(IsOpenMusic == true)
  {
  wma.stop();
  obj.innerHTML = "背景音乐 (开)";
  IsOpenMusic = false;
  }
  else
  {
  wma.play();
  obj.innerHTML = "背景音乐 (关)";
  IsOpenMusic = true;
  }
}
</SCRIPT>
<OBJECT id=Object1 style="DISPLAY: none" type=application/x-mplayer2  
  name=wma><PARAM NAME="src" VALUE="<%=strMu %>">
  <PARAM NAME="autostart" VALUE="true"><PARAM NAME="controller" VALUE="true"></OBJECT>
  <SPAN id=music style="CURSOR: hand"  
  onclick=MusicOperate()>背景音乐 (关)</SPAN>

------解决方案--------------------

using System.Media;  
using System.IO;  
SoundPlayer music = new SoundPlayer();  
music = new SoundPlayer("");  
music.Play();  
或  
[DllImport("winmm.dll")]  
public static extern long PlaySound(String fileName,long a,long b);  

[DllImport("winmm.dll")]  
     public static extern long mciSendString(string lpstrCommand,string lpstrReturnString,long length,long hwndcallback);  
     public static void PlayMusic(string p_FileName)  
       {  
       try  
         {  
 mciSendString(@"close "+p_FileName ,"",0,0);  
 mciSendString(@"open " + p_FileName,"",0,0);  
 mciSendString(@"play " + p_FileName ,"",0,0);  
       }  
         catch  
           {  
           }  
     }