Looks like you're almost done! As a final step, run the following commands from the terminal: sudo service airtime-playout start, sudo service airtime-liquidsoap start, sudo service airtime-media-monitor start.
sudo service airtime-playout start
sudo service airtime-liquidsoap start
sudo service airtime-media-monitor start
Click "Done!" to bring up the Airtime configuration checklist; if your configuration is all green, you're ready to get started with your personal Airtime station!