运行下面的Applet程序出问题？？？

FATAL ERROR:Invalid media file parameter
java.lang.Error: Invalid media file parameter
          at SimplePlayerApplet.Fatal(SimplePlayerApplet.java:200)
          at SimplePlayerApplet.init(SimplePlayerApplet.java:68)
          at sun.applet.AppletPanel.run(AppletPanel.java:373)
          at java.lang.Thread.run(Thread.java:595)