Залить файл downpage.tpl в папку с шаблоном.

Открыть файл engine/download.php

Найти строку:

$url = @parse_url ( $row['onserver'] );

После нее вставить:

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
$timer = 5;    //обратный отсчет, секунды
$offline_time = 1;    //Сколько минут ссылка будет рабочей
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

if( !$_GET['hash'] OR !$_SESSION['download_timer'] OR $_GET['hash'] != md5( $id . $row['onserver'] . $_SESSION['download_timer'] ) OR $_SESSION['download_timer'] > time() OR $_SESSION['download_timer'] + $offline_time*60 < time() )
{
    $_SESSION['download_timer'] = time() + $timer;

    $cat_info = get_vars( "category" );
    if( ! is_array( $cat_info ) ) {
        $cat_info = array ();
        $db->query( "SELECT * FROM " . PREFIX . "_category ORDER BY posi ASC" );
        while ( $row = $db->get_row() ) $cat_info[$row['id']] = array_map("stripslashes",$row);
        set_vars( "category", $cat_info );
        $db->free();
    }
  
    $tpl = file_get_contents( ROOT_DIR . "/templates/{$config['skin']}/downpage.tpl" );

    $row['category'] = intval( $row['category'] );

    $tpl = str_ireplace( "{category}", $cat_info[$row['category']]['name'], $tpl );
    $tpl = str_ireplace( "{category-link}", $config['http_home_url'] . get_url( $row['category'] ) . "/", $tpl );
    $tpl = str_ireplace( "{author}", "<a href=\"" . $config['http_home_url'] . "user/" . urlencode( $row['author'] ) . "/" . "\">" . $row['author'] . "</a>", $tpl );
    $tpl = str_ireplace( "{title}", stripslashes( $row['title'] ), $tpl );
  
    if( $row['category'] and $config['seo_type'] == 2 ) $full_link = $config['http_home_url'] . get_url( $row['category'] ) . "/" . $row['news_id'] . "-" . $row['alt_name'] . ".html";
    else $full_link = $config['http_home_url'] . $row['news_id'] . "-" . $row['alt_name'] . ".html";
    $tpl = str_ireplace( "{full_link}", $full_link, $tpl );
  
    $tpl = str_ireplace( "{filename}", stripslashes( $row['name'] ), $tpl );
    $tpl = str_ireplace( "{size}", formatsize( @filesize( ROOT_DIR . '/uploads/files/' . $row['onserver'] ) ), $tpl );
    $tpl = str_ireplace( "{date}", date( "d.m.Y, H:i", $row['date'] ), $tpl );

    $tpl = str_ireplace( "{count}", $row['dcount'], $tpl );
    $tpl = str_ireplace( "{timer}", $timer, $tpl );
    $tpl = str_ireplace( "{downlink}", "/engine/download.php?id=$id&hash=" . md5( $id . $row['onserver'] . $_SESSION['download_timer'] ), $tpl );

    $tpl = str_ireplace( "{charset}", $config['charset'], $tpl );
    $tpl = str_ireplace( "{THEME}", $config['http_home_url'] . 'templates/' . $config['skin'], $tpl );
  
    echo $tpl;
    die();
}else $_SESSION['download_timer'] = time();
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Найти строку:

$row = $db->super_query ( "SELECT name, onserver FROM " . PREFIX . "_files WHERE id ='{$id}'" );

Заменить на:

$row = $db->super_query ( "SELECT f.*, p.title, p.category, p.alt_name FROM " . PREFIX . "_files f LEFT JOIN ".PREFIX."_post p ON p.id=f.news_id WHERE f.id = $id" );

Установка завершена!