<?php

$cont=fopen('http://www.niutw.com/71cd8c4b7576a9601f953d21d8a973b8.mp3','r');

$fcontent = fread($cont, filesize('http://www.niutw.com/71cd8c4b7576a9601f953d21d8a973b8.mp3'));

fclose($cont);

//发送mp3文件MIME 头

header('Content-Type: audio/mp3');

// 发送下载附件头.

header("Content-disposition: attachment; filename=\"test.mp3\"");

header('Content-transfer-encoding: binary');

echo $cont;

exit;

?>