Pobieranie plików z zewnętrznego serwera

Witam. Mam taki skrypt. Co zrobic aby pliki można było pobierac z zewnętrznego serwera ???

<?php

    $file = stripslashes($_GET['file']);


    if (! is_file($file))

    {

        header('HTTP/1.1 404 File Not Found');

        die();

    }


    $fname = basename($file);

    $fsize = filesize($file);

    $ftime = filemtime($file);

    $range = $_SERVER['HTTP_RANGE'];


    $r_start = 0;

    $c_length = $fsize;


    if ($range)

    {

        $reg = "/bytes=([0-9]+)-([0-9]*)/";

        preg_match($reg, $range, $matches);


        $r_start = (int) $matches[1];

        $r_stop = (int) $matches[2];

        if ($r_stop < $r_start) $r_stop = $fsize - 1;

        $c_length = $r_stop - $r_start + 1;


        header('HTTP/1.1 206 Partial Content');

        header('Content-Range: bytes ' .

            $r_start . '-' . $r_stop . '/' . $fsize);

    }

    else

    {

        header('HTTP/1.1 200 OK');

    }


    header('Last-Modified: ' .

        gmdate('D, d M Y H:i:s', $ftime) . ' GMT');

    header('Content-Disposition: ' .

        'attachment; filename="' . $fname . '"');

    header('Accept-Ranges: bytes');

    header('Content-Type: application/x-unknown');

    header('Content-Transfer-Encoding: binary');

    header('Content-Length: ' . $c_length);


    if ($fp = fopen($file, 'rb'))

    {

        flock($fp, 1);

        fseek($fp, $r_start);

        echo(fread($fp, $c_length));

        flock($fp, 3);

        fclose($fp);

    } 


?>