+--------------------------------------------------------+
| Main process                                           |
| +--------------+              +----------------------+ |
| | GUI (Gtk2)   | ---update--> | Network with plugins | |
| |              | <--update--- |                      | |
| +--------------+              | +------------------+ | |
| +--------------+              | | audio output     | | |
| | Timer (Gtk2) | ---- run --> | +------------------+ | |
+ +--------------+              +----------------------+ |
+--------------------------------------------------------+