When the broadcast link goes down, a DJ doesn't turn up to do their show or any other reason that the scheduled content does not air, the default Pilot kicks in and saves the day. This feature also serves the purpose of having a mix of tracks playing constantly, without needing to schedule specific Pilots/Playlists at specific time slots.
Choose the pilot that you wish to set as default and click on the star option on the left, as highlighted in the screenshot below.
