adding a tag to nanogong.wav realname file

main/document/record_audio.php

@@ -140,7 +140,7 @@ function submitVoice() {
 	var nano_group_id="<?php echo api_get_group_id(); ?>";
 	var nano_session_id="<?php echo api_get_session_id(); ?>";
 	//path, url and filename
-	var filename = document.getElementById("audio_title").value+".wav";	
+	var filename = document.getElementById("audio_title").value+"_chnano_.wav";//adding name file, tag and extension
 	var filename = filename.replace(/\s/g, "_");//replace spaces by _
 	var filename = encodeURIComponent(filename);	
 	var filepath="<?php echo urlencode($filepath); ?>";

main/inc/lib/nanogong/receiver.php

@@ -46,7 +46,9 @@ $filename = Database::escape_string($filename);
 $filename = replace_dangerous_char($filename, $strict = 'loose');// or strict
 $filename = disable_dangerous_file($filename);
 
-$title= str_replace('_',' ',$filename);
+$title= trim(str_replace('_chnano_.','.',$filename));//hide nanogong wav tag at title
+$title= str_replace('_',' ',$title);
+
 //
 $documentPath = $filepath.$filename;