js: pass pure dom element to piwik add listener

panikweb_templates/static/js/specifics.js

@@ -89,7 +89,7 @@ $(function() {
 				piwikTracker.setCustomUrl(window.location.href);
 				piwikTracker.trackPageView();
 				$('.audio a').each(function() {
-					piwikTracker.addListener($(this));
+					piwikTracker.addListener(this);
 				});
 			}
 		}