WMPOpenExt('mkv', '*.mkv', 'Matroska Media file');
  WMPOpenExt('mp4', '*.mp4', 'MPEG-4 Media file');
  WMPOpenExt('ogm', '*.ogm', 'Ogg Media file');
  WMPOpenExt('flv', '*.flv', 'Flash Video file');
  WMPOpenExt('mkv', '*.mka', 'Matroska Media file');
  WMPOpenExt('mp4', '*.m4a', 'MPEG-4 Media file');
  WMPOpenExt('ts', '*.ts', 'Transport Stream file');
  WMPOpenExt('wv', '*.wv', 'WavPack Audio file');
  WMPOpenExt('mp4', '*.m4b', 'MPEG-4 Media file');
  WMPOpenExt('mp4', '*.m4v', 'MPEG-4 Media file');
  WMPOpenExt('mp4', '*.mp4v', 'MPEG-4 Media file');