Shadowbox FLV video linking to Quicktime

I am using this code to put video into my nextgen gallery.

jQuery(document).ready(function($){
  $(".ngg-gallery-thumbnail a").each(function (arr){
    if ($(this).attr("title").substr(0,5)=="Video"){
      var thereltag = $(this).attr("rel").substr(0,22);
      $(this).attr("rel", thereltag + ";width=512;height=348");
      $(this).attr("href",$(this).children("img").attr("title"));
      var thesrctag = $(this).children("img").attr("src");
      $(this).children("img").attr("src", "/wp-content/gallery/film.php?path=" + thesrctag);
    }
  })
});

I upload the thumbnail like a normal image and in the alt line I put the word Video. The problem is that when the thumbnail is clicked shadowbox pops up, followed by a box asking if you want to save the file or play it with quicktime.

I have seen other posts about putting player=flv; in the rel tag, but am not really sure how to do that. I tried putting it in line 5 before the width and height, but didn’t work.

Oh and these are self-hosted flv files.
Thanks