set_time_limit(0);
$filename = "file.mp3";
query("INSERT INTO download (file,size,time,operation) VALUES ('$filename','',now(),'started')");
header("Content-Type: audio/mpeg");
header("Content-transfer-encoding: binary");
$fp=fopen($filename, "r");
$res = fpassthru($fp);
query("INSERT INTO download (file,size,time,operation) VALUES ('$filename','$res',now(),'finished')");