Each time, that is, each different day, only one track will be required, and it will probably be a different track each time.

There's a slight possibility that several minutes after the one track has finished, another track may need to be played. There will be plenty of time to make a second setup of that other single track.

Just to make things easy at the moment, I've considered burning one song onto a disc. You couldn't get the wrong track, but that still leaves the start time and it adds the task of burning a disc each time, as well as cataloging for future use.