can't add audio or video from mediamanager

[Sennevds]

I saw that you don't support audio and video from mediamanager.
I've tried to add the feature by editing the ocmediamanager plugin like this:
for (var i=0, len=items.length; i<len; i++) { if (items[i].documentType == 'audio') { editor.insertHtml('<audio src="' + items[i].publicUrl + '"controls />'); } else if (items[i].documentType == 'image') { editor.insertHtml('<img src="' + items[i].publicUrl + '" />', 'unfiltered_html'); } else { alert('The file "'+items[i].title+'" is not an image.') continue }
but still I don't get any audio file. i've tried adding following line to the config:
CKEDITOR.config.extraAllowedContent = 'audio';
but then i get following  
can you help me