How to play .rm files in android?

MediaPlayer plays .mp3 files without any problem. But during playback of .rm files this is an exception.

code:

try{
     AssetFileDescriptor afd = getAssets().openFd("song.rm");
     MediaPlayer player;
     player = new MediaPlayer();
     player.setDataSource(afd.getFileDescriptor(),afd.getStartOffset(),afd.getLength());
     player.prepare();
     player.start();                
  } catch(Exception e){
        System.out.println("Exception while Playing: "+e);                  
    }

      

        
        
        
      

    

An exception:

01-30 16:42:11.126: E/MediaPlayer(1404): Unable to to create media player
01-30 16:42:11.126: I/System.out(1404): Exception while Playing : java.io.IOException: setDataSourceFD failed.: status=0x80000000