Как скрыть путь

function upload($file, $name = false, $limit = 0) {
    if (file_exists($file)) {
        $stream = new SplFileObject($file, 'rb');
        header('Content-Type: application/force-download');
        header('Content-Description: inline; File Transfer'); 
        header('Content-Disposition: attachment; filename="' . ($name ?: basename($file)) . '";', false);
        header('Content-Transfer-Encoding: binary');
        header('Content-Length: ' . $stream->getSize());
        ob_clean(); 
        while (!$stream->eof()) {
            echo $stream->fread($limit ? 1024 * $limit : $stream->getSize());
            sleep(1);
            flush();
        }
    } else {
        echo 'Что-то пошло не так!';
    }
}

$file2 = 'files/22.png';
$file3 = 'files/icq.mp3';

#upload($file2, 'jkhsdakjasdfh.png', 1);
upload($file3, 'skjdhf.mp3', 2);