--- a/cms/app-client/app/models/document.js	Sun Jul 17 22:17:24 2016 +0200
+++ b/cms/app-client/app/models/document.js	Sun Jul 17 23:58:55 2016 +0200
@@ -30,7 +30,6 @@
 
     media: Ember.computed('mediaArray', function() {
         var array = [];
-        var mp3 = null;
         _.forEach(this.get('mediaArray'), function(media) {
             var index = array.findIndex(element => element.format === media.format);
             if(index > -1) {