4.4. JACK Port Setup

If you use JACK output, you need this dialog to route the outputs of the program somewhere (most likely to the playback ports representing the soundcard driver). If you want the outputs to be connected automatically to the first two hardware playback devices, use the -a (or --auto) command line option.

On the left, each output port has a list of its current connections. By clicking on any list item, that connection will be removed. The Clear connections button removes all connections from the output ports.

The notebook on the right has a page for all client programs and hardware devices available to the JACK server. Naturally only those are shown which are data sinks (hardware playback devices or inputs of JACK clients), thus connectable to outputs which are data sources. By selecting a notebook page, you will see a list of that client's input ports. Clicking on a list item connects the port to the currently selected Aqualung output port (which has a blue header). You can change the selected output port by clicking on the unselected (grey) list header. When you add connections to the output ports, the selection alters between the two outputs so connecting both outputs is very fast and easy.

If you start up another JACK client while the dialog is open, you may press the Rescan button to make it appear in the notebook. Closing and re-opening the dialog has the same effect, since JACK ports are re-read and a new dialog instance is built every time.