Allow media (module) tags in wysiwyg with ckeditor 3

/**
 * Implements hook_wysiwyg_editor_settings_alter().
 */
function hook_wysiwyg_editor_settings_alter(&$settings, $context) {
  // Allow media (module) tags.
  if ($context['profile']->editor == 'ckeditor') {
    $settings['allowedContent'] = TRUE;
  }
}