--- a/getfile.php
+++ b/getfile.php
@@ -1,1 +1,20 @@
+<?php
+$reqfile = "path/to/file.3gp";
+$contenttype="audio/3gpp";
+ 
+if($fn=fopen($reqfile, "rba")){
+  header("Content-Type: ".$contenttype); 
+  header("Content-Length: ".filesize($reqfile)); 
+  header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
+  header("Pragma: no-cache");
+  header("Expires: Mon, 26 Jul 1997 06:00:00 GMT");
+  header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0, post-check=0, pre-check=0");
+passthru("ffmpeg -i 2012-09-29-1348911268.34-demo.wav -ar 8000 -ab 4.75k -");
+  fpassthru($fn);
+  fclose($fn);
+}else{
+  exit("error....");
+}
+exit();
+?>