Update tune in converstaion window.

src/common/pep.py

@@ -159,6 +159,10 @@ def user_tune(items, name, jid):
 			if contact.tune.has_key('length'):
 				del contact.tune['length']
 
+	ctrl = gajim.interface.msg_win_mgr.get_control(user, name)
+	if ctrl:
+		ctrl.update_tune()
+
 def user_geoloc(items, name, jid):
 	pass