CC-2622: stop current play song, when item is removed from thie list

- fixed

airtime_mvc/public/js/airtime/library/spl.js

@@ -304,6 +304,9 @@ function addSPLItem(event, ui){
 function deleteSPLItem(event){
     event.stopPropagation();
     
+    // stop any preview playing
+    $('#jquery_jplayer_1').jPlayer('stop');
+
 	var url, pos;
 
 	pos = $(this).parent().parent().attr("id").split("_").pop();