Problem with Player (realize)

Question

Need help!!!
At first use of the given class the player is not realized and there is no sound, events connected with realization of a player appear during the moment of its closing.
At following use all works.
Please help. Thanks in advance.
package ua.cv.usl.sip.audio;
import javax.media.Control;
import javax.media.ControllerEvent;
import javax.media.ControllerListener;
import javax.media.Manager;
import javax.media.Owned;
import javax.media.Player;
import javax.media.RealizeCompleteEvent;
import javax.media.Renderer;
import javax.media.control.BufferControl;
import javax.media.rtp.RTPManager;
import javax.media.rtp.ReceiveStream;
import javax.media.rtp.ReceiveStreamListener;
import javax.media.rtp.SessionListener;
import javax.media.rtp.event.NewReceiveStreamEvent;
import javax.media.rtp.event.ReceiveStreamEvent;
import javax.media.rtp.event.SessionEvent;
import com.sun.media.controls.GainControlAdapter;
class AudioReceiver implements ReceiveStreamListener, SessionListener, ControllerListener {
     private GainControlAdapter gainControl = null;
     // link to MediaManager
     private MediaManager audioManager;
     // buffer param
     public static final int DEFAULT_BUFFER_LENGTH = 350; // 350;
     public static final int RENDER_BUFFER_LENGTH = 200;
     private RTPSocketAdapter connection;
     private Player player;
     public AudioReceiver(MediaManager aManager, RTPSocketAdapter connection) {
          audioManager = aManager;
          this.connection = connection;
     protected void setMute(boolean mute) {
          if (gainControl != null)
               gainControl.setMute(mute);
     protected void setVolume(float vol) {
          if (gainControl != null)
               gainControl.setLevel(vol);
     public synchronized void initialize() {
          audioManager.rtpSessions[1] = RTPManager.newInstance();
          audioManager.rtpSessions[1].addSessionListener(this);
          audioManager.rtpSessions[1].addReceiveStreamListener(this);
          audioManager.rtpSessions[1].initialize(connection);
          // initialize buffer
          BufferControl bc = (BufferControl) audioManager.rtpSessions[1].getControl("javax.media.control.BufferControl");
          if (bc != null) {
               bc.setBufferLength(DEFAULT_BUFFER_LENGTH);
               Control cs[] = audioManager.mediaProcessor.processor.getControls();
               for (int j = 0; j < cs.length; j++)
                    if (cs[j] instanceof Owned && cs[j] instanceof BufferControl)
                         if (((Owned) cs[j]).getOwner() instanceof Renderer)
                              ((BufferControl) cs[j]).setBufferLength(RENDER_BUFFER_LENGTH);
     public synchronized void stop() {
          player.stop();
          player.deallocate();
      * SessionListener.
     public void update(SessionEvent evt) {}
      * ReceiveStreamListener
     public void update(ReceiveStreamEvent evt) {
          if (evt instanceof NewReceiveStreamEvent) {
               try {
                    ReceiveStream stream = ((NewReceiveStreamEvent) evt).getReceiveStream();
                    player = Manager.createPlayer(stream.getDataSource());
                    player.addControllerListener(this);
                    player.realize();
               catch (Exception e) {
                    return;
      * ControllerListener for the Players.
     public void controllerUpdate(ControllerEvent ce) {
          if (player != null) {
               if (ce instanceof RealizeCompleteEvent) {
                    player.start();
                    gainControl = (GainControlAdapter) player.getGainControl();
}

Answer 1

You code is fine.. Mine is about the same... I think the problem is outside AudioReceiver. Something's blocking your thread and doesnt let the Player start. Try starting receiver first, and then transmitter.
Another wild guess: initialize your RTPManager before adding listeners.