Playing files that are outside the webserver

Hi,

how do I configure SWF tools so that it plays files that are outside the webserver? I tried to change the default drupal files directory but the final constructed media directory is not correct. I also tested adding the following code in settings.php:

  $conf = array(
    'swftools_media_url' => 'file:///C:/MyStorage/files',
  );

Thanks for any help.
K.