rem: return g_list_nth (tcs->priv->cdroms, nr)->data;
add: GList *item;  item = g_list_nth (tcs->priv->cdroms, nr); if (item == NULL) return NULL; else return item->data;
context: get_drive (TotemCdSelection *tcs, int nr){	return g_list_nth (tcs->priv->cdroms, nr)->data;}