diff -r f7223e2f3023 -r 62984937a062 cms/app-client/app/models/document.js
--- a/cms/app-client/app/models/document.js	Thu Jan 21 00:11:10 2016 +0100
+++ b/cms/app-client/app/models/document.js	Thu Jan 21 21:07:02 2016 +0100
@@ -1,5 +1,6 @@
 import DS from 'ember-data';
 import Ember from 'ember';
+import _ from 'lodash/lodash';
 
 var Document = DS.Model.extend({
   // id: DS.attr('string'),
@@ -12,7 +13,7 @@
   mediaList: Ember.computed('mediaArray', function() {
     var res = [];
     var mp3 = null;
-    Ember.$.forEach(this.get('mediaArray'), function(m) {
+    _.forEach(this.get('mediaArray'), function(m) {
       if(m.format === 'audio/mpeg') {
         mp3 = m;
       } else if (m.format.startsWith('audio/')) {