Ya lo encontre se hace através de PHP, por si a alguien le sirve dejo el código que encontre
index.html
Código HTML:
Ver original<a href="DOWNLOAD_MP3.PHP?mp3=Rom1_1.mp3">Download Romans 1:1
</a>
DOWNLOAD_MP3.php
Código PHP:
<?php
//If the mp3 posted variable is blank or too big (hacking attempt)
//send them to the home page...
if ( (!isset($_GET["mp3"])) || (strlen($_GET["mp3"]) > 100) ) {
header("Location: http://www.example.com/index.php");
} else {
//if there is a posted Mp3 set then do this...
$mp3Name = trim(addslashes(strip_tags($_GET["mp3"]))); //which would be "Rom1_1.mp3"
$filename = "Romans/$mp3Name";
header("Content-Length: " . filesize($filename));
header('Content-Type: audio/mpeg');
header("Content-Disposition: attachment; filename= $mp3Name");
readfile($filename);
?>