Ja...
<?php
session_cache_limiter('none');
session_start();
$myfile = "min-mp3.mp3"
header ("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Length: ' . filesize($myfile));
header('Content-Disposition: attachment; filename=' . basename($myfile));
readfile($myfile);
?>