diff -r 89be68e13215 -r f0609941aa98 cms/app-client/app/models/sound.js
--- a/cms/app-client/app/models/sound.js	Wed Jan 20 13:04:27 2016 +0100
+++ b/cms/app-client/app/models/sound.js	Wed Jan 20 15:53:27 2016 +0100
@@ -7,8 +7,8 @@
   type: DS.attr('string'),
   spatial: DS.attr('string'),
   language: DS.attr('string'),
-  created: DS.attr('integer'),
-  master: DS.attr('url')
+  created: DS.attr('number'),
+  master: DS.attr('string')
 });
 
 Sound.reopenClass({