Assuming newest is required, the following result was found.
$order = 'a.title ASC'; break; case 'category': $order = 'c.title ASC, a.title ASC'; $morder = 'a.title ASC'; break; case 'newest': default: $order = 'a.created DESC'; break; « Show Me » To add it to the frontend as option in advanced search: OPTION FOR...