<?php

$file=$_GET['file'];

header("Content-disposition: attachment; filename=".$file);

header("Content-Type: application/force-download");

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

header("Content-Length: ".filesize("/home/www/documents/audio/".$file));

header("Pragma: no-cache");

header("Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0");

header("Expires: 0");

readfile("/home/www/documents/audio/".$file);

exit();

?>