public function executeOriginal(sfRequest $request)
 {
     $item = $this->getItem();
     $format = $request->getParameter('format');
     $this->forward404Unless(in_array($format, array_keys(aMediaItemTable::$mimeTypes)));
     $path = $item->getOriginalPath($format);
     if (!file_exists($path)) {
         // Make an "original" in the other format (conversion but no scaling)
         aImageConverter::convertFormat($item->getOriginalPath(), $item->getOriginalPath($format));
     }
     header("Content-type: " . aMediaItemTable::$mimeTypes[$format]);
     readfile($item->getOriginalPath($format));
     // Don't let the binary get decorated with crap
     exit(0);
 }