LIBAO4_1.1.0 {
  global: ao_append_global_option;
          ao_append_option;
          ao_close;
          ao_default_driver_id;
          ao_driver_id;
          ao_driver_info;
          ao_driver_info_list;
          ao_free_options;
          ao_initialize;
          ao_is_big_endian;
          ao_open_file;
          ao_open_live;
          ao_play;
          ao_shutdown;
  local:  *;
};