Script Rename Link Download Soundcloud

<?php
include 'func.php';
$id=$_GET['id'];
$grab=json_decode(ngegrab('http://api.soundcloud.com/tracks/'.$id.'.json?client_id=c435ec96ae345d5ce32496d339fc291d'));
$dl=''.getlinkdl($id).'';
$nama=$grab->title;
header("Content-Type: audio/mpeg");
header('Content-Disposition:attachment; filename="'.$nama.'.mp3"');
readfile("$dl");
header("Content-Transfer-Encoding:binary");
?>

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untuk link download :

<a href="download/'.$id.'.mp3">Download</a>

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kode untuk .htaccess

RewriteRule ^download/(.+)\.mp3$ load.php?id=$1 [L]