Android Camera Preview Stopping Audio

Question

I'm trying to play a song snippet in an Android app which includes a camera preview. But whenever I start a song playing with

MediaPlayer mp = MediaPlayer.create(this, R.raw.song1);
     mp.start();

It always stops after ~.5seconds

I have come to the conclusion that it is something about the camera preview that is stopping the music, since I put the above code snippet in OnCreate and it played for about 2 seconds, then stopped immediately after the camera preview appeared on the screen. I have a suspicion that this may be related to the autofocus.

Below is the code for the camera initialization, preview and surface callbacks in this app:

@Override
     public void surfaceChanged(SurfaceHolder holder, int format, int w, int h)
     {
      if (mCamera == null)
       return;
      //Determine whether our preview should be portrait or landscape, and set our parameters accordingly
      //TODO Fix this for the N1
      mCamera.setDisplayOrientation(90);

      //Tell the camera to use our surfaceholder and start preview
      try 
      {
       mCamera.setPreviewDisplay(holder);
      } 
      catch (IOException e) 
      {
       e.printStackTrace();
      }

      mStartPreviewHandler.post(mStartPreview);
     }

     private void initializeCamera()
     {
         mCamera = Camera.open();

         Parameters params = mCamera.getParameters(); 

         //Save the pixel format used in preview. This will be passed to the Reader. 
         mPixelFormat = params.getPreviewFormat();

         //Commit parameter changes
      mCamera.setParameters(params);

      mCounter = 0;
     }

    private Camera.AutoFocusCallback mAutofocusCallback = new Camera.AutoFocusCallback()
     {
      @Override
      public void onAutoFocus(boolean success, Camera camera)
      {
       //Restart autofocus
       mAutoFocusHandler.postDelayed(mUpdateAutofocus, mAutoFocusDelay);
      }
     };

    //Runnable to start the auto focus cycle
     final Runnable mUpdateAutofocus = new Runnable()
     {
      public void run()
      {
       startAutofocus();
      }
     };

     private void startAutofocus()
     {
      if (mCamera == null)
       return;

      mCamera.autoFocus(mAutofocusCallback);
     }
private Camera.PreviewCallback mPreviewCallback = new Camera.PreviewCallback()
 {
  @Override
  public void onPreviewFrame(byte[] data, Camera camera)
  {
   if (mCamera == null)
   {
    return;
   }

   if (mCounter == 0)//Start the autofocus cycle on the first preview frame
   {
    mAutoFocusHandler.post(mUpdateAutofocus);
    mCounter++;
   }

   Camera.Parameters params = mCamera.getParameters();
   Size size = params.getPreviewSize();

   (Some long custom stuff here...)
 };