Streaming Audio Files Over Web Using JMF Plugin

I've been experiencing problems with the JMF extension when used in an Applet on the web. The program has worked fine previously but not returns the following error...

PackageManager: error reading registry
javax.media.NoPlayerException: Cannot find a Player for : [filename]
at javax.media.Manager.createPlayerForContent(Manager .java:1412)
at javax.media.Manager.createPlayer(Manager.java:417)

[Code] .....

However the program works fine in Eclipse with no errors. I have tried reinstalling the JMF package and setting the CLASSPATH and JMFHOME but it still does not work. I am using the jmf-2_1_1e-alljava version. I have also tried putting the player code in an AccessController.doPrivileged() block but this still does not seem to work.

My code for the player is as follows....

private void play(final String track) {
Thread dispatch = new Thread() {
public void run() {
try {
if(player!=null)
player.close();

[Code] .....