Bravo List - download.php Please help

First Hello
The problem is

I want When a user Download external torrents my announce-list Enters In torrent File Automatic

Example

PHP Code:


		
			
http://localhost/rrm/announce.php?passkey=86c30c6fa20f0dab26ff5840894d9b14

http://Web external /0e75fa5ef298d1e1b41b960ba5b2f15e/announce

I know that changing it in download.php But I Ask for help

This Must be changed

PHP Code:


		
			
require_once "backend/benc.php";



//if user dont have a passkey generate one, only if tracker is set to members only

if ($site_config["MEMBERSONLY"]){

     if (strlen($CURUSER['passkey']) != 32) {

         $rand = array_sum(explode(" ", microtime()));

         $CURUSER['passkey'] = md5($CURUSER['username'].$rand.$CURUSER['secret'].($rand*mt_rand()));

         mysql_query("UPDATE users SET passkey='$CURUSER[passkey]' WHERE id=$CURUSER[id]");

     }

}



if ($row["external"]!='yes' && $site_config["MEMBERSONLY"]){// local torrent so add passkey

     $dict = bdec_file($fn, (1024*1024));



     $dict['value']['announce']['value'] = "$site_config[SITEURL]/announce.php?passkey=$CURUSER[passkey]";

     $dict['value']['announce']['string'] = strlen($dict['value']['announce']['value']).":".$dict['value']['announce']['value'];

     $dict['value']['announce']['strlen'] = strlen($dict['value']['announce']['string']);

     unset($dict['value']['announce-list']);





     header('Content-Disposition: attachment; filename="'.$name.'"');



     header("Content-Type: application/x-bittorrent");



     print(benc($dict));



}else{// external torrent so no passkey needed

     header('Content-Disposition: attachment; filename="'.$name.'"');



     header("Content-Type: application/x-bittorrent");



     readfile($fn);

}



mysql_close();



?>

Thanks for any help