void add_bundle (boost::shared_ptr<ARDOUR::Bundle>);
void bundle_changed (ARDOUR::Bundle::Change, boost::shared_ptr<ARDOUR::UserBundle>);
void set_button_sensitivity ();
void add_bundle (boost::shared_ptr<ARDOUR::Bundle>);
void bundle_changed (ARDOUR::Bundle::Change, boost::shared_ptr<ARDOUR::UserBundle>);
void set_button_sensitivity ();