hi i am trying to build a custom OSMF player using "osmf1.5.swc" and flash cs4 professional but getting this errors.....

1046: Type was not found or was not a compile-time constant: DRMStatusEvent.

1046: Type was not found or was not a compile-time constant: SystemUpdater.

1046: Type was not found or was not a compile-time constant: DRMStatusEvent.

1046: Type was not found or was not a compile-time constant: DRMErrorEvent.

1046: Type was not found or was not a compile-time constant: DRMAuthenticationCompleteEvent.

1046: Type was not found or was not a compile-time constant: DRMAuthenticationErrorEvent.

1046: Type was not found or was not a compile-time constant: SystemUpdater.

and the AS 3.0 code i am using is...

package

{

          import flash.display.*;

          import org.osmf.containers.MediaContainer;

          import org.osmf.elements.VideoElement;

          import org.osmf.media.MediaPlayer;

          import org.osmf.media.URLResource;

          public class displayarea extends MovieClip

          {

                    public function displayarea()

                    {

  //testing console o/p

                              trace("hello");

                              //OSMF code starts here

                              var container = new MediaContainer();

                              addChild(container);

                              var videoelement = new VideoElement(new URLResource("Pixar_Presto.flv"));

                              container.addMediaElement(videoelement);

                              var mediaplayer = new MediaPlayer();

                              mediaplayer.media = videoelement;

                    }

          }

}

any suggestions?