Index: duration.module
===================================================================
--- duration.module	(revision 30)
+++ duration.module	(working copy)
@@ -62,6 +62,10 @@ function duration_field_settings($op, $field) {
       // do that.
       $data[$table_alias][$field['field_name'] .'_iso8601']['field']['handler'] = 'duration_handler_field';
 
+      $data[$table_alias][$field['field_name'] .'_approx_seconds']['title'] .= t(' Length in Seconds');
+      $data[$table_alias][$field['field_name'] .'_approx_seconds']['field']['title'] = t('Length in Seconds');
+      $data[$table_alias][$field['field_name'] .'_approx_seconds']['sort']['field'] = $field['field_name'] .'_approx_seconds';
+
       return $data;
   }
 }