* - Server: \ref server_command, \ref sender,
* - Audio file selector: \ref audio_format_handler, \ref mood, \ref afs_table,
* - Client: \ref receiver, \ref receiver_node, \ref filter, \ref filter_node.
* - Server: \ref server_command, \ref sender,
* - Audio file selector: \ref audio_format_handler, \ref mood, \ref afs_table,
* - Client: \ref receiver, \ref receiver_node, \ref filter, \ref filter_node.