[求助] 关于JMF的问题

Question

我想试用下JMF ,写个小应用程序,就是执行时直接播放音乐总是有问题
恳请大虾指点
public class SimpleAudioPlayer {
    private Player audioPlayer = null;
   public SimpleAudioPlayer(URL url) throws IOException,
           NoPlayerException,CannotRealizeException {
       try{
              audioPlayer=Manager.createRealizedPlayer(url);
      //audioPlayer=Manager.createPlayer(new MediaLocator(url));
      if (audioPlayer==null)
        System.out.println("无法创建播放器．");
       audioPlayer.prefetch() ;
       
      }catch(IOException ei){
          ei.printStackTrace();
          System.out.println("IOexcepiont");
      }catch(NoPlayerException en){
          en.printStackTrace();
           System.out.println("NoPlayerException");      }catch(Exception e){
          e.printStackTrace();
           System.out.println("Exception");
      }
       
   }
   public void play() {audioPlayer.start();}
   public void stop() {audioPlayer.stop();audioPlayer.close();}
   public static void main(String[] args) throws MalformedURLException {
      // File audioFile = new File("file:///E|/music/jieyao.mp3");
      URL url=new URL("file:///E:/music/jieyao.mp3");
      try{
          SimpleAudioPlayer player = new SimpleAudioPlayer( url);
          player.play();
          player.stop();
      }catch(IOException ei){
         ei.printStackTrace();
      }catch(NoPlayerException en){
          en.printStackTrace();
      }catch(CannotRealizeException ec){
          ec.printStackTrace();
      }catch(Exception e){
           e.printStackTrace();
      }
   }
}
总是抛异常啊 
C:\Borland\JBuilder2005\jdk1.4\bin\javaw -classpath "C:\Documents and Settings\Administrator\jbproject\sample\classes;C:\Borland\JBuilder2005\thirdparty\junit3.8\junit.jar;C:\Borland\JBuilder2005\lib\unittest.jar;C:\Program Files\JMF2.1.1e\lib\customizer.jar;C:\Program Files\JMF2.1.1e\lib\sound.jar;C:\Program Files\JMF2.1.1e\lib\jmf.jar;C:\Program Files\JMF2.1.1e\lib\mediaplayer.jar;C:\Program Files\JMF2.1.1e\lib\multiplayer.jar;C:\Borland\JBuilder2005\jdk1.4\jre\bin\JBuilder2005_c.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\im\indicim.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\im\thaiim.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\ext\dnsns.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\ext\sunjce_provider.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\ext\ldapsec.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\ext\localedata.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\jsse.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\plugin.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\sunrsasign.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\charsets.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\rt.jar;C:\Borland\JBuilder2005\jdk1.4\jre\lib\jce.jar;C:\Borland\JBuilder2005\jdk1.4\jre\javaws\javaws.jar;C:\Borland\JBuilder2005\jdk1.4\lib\tools.jar;C:\Borland\JBuilder2005\jdk1.4\lib\dt.jar;C:\Borland\JBuilder2005\jdk1.4\lib\htmlconverter.jar"   -Djunit.sourceroot="C:/Documents and Settings/Administrator/jbproject/sample/test" -Djunit.package=sample -Djunit.prefix=Test -Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=jkl-50cdb88c942:2810,suspend=y com.borland.jbuilder.unittest.JBTestRunner -socket jkl-50cdb88c942:2809 com.borland.jbuilder.unittest.PackageTestSuite
Hit uncaught exception java.lang.ClassNotFoundException
本人是菜鸟啊,不知道是哪的问题啊,但是感觉好象是URL建的有问题啊,恳请指点啊