Showplan SongFinder is an extension for ShowPlan. It allows you to see the track history.
At the moment, it will simply open a database connection to a database named song_history (sorry, shared hosting users!) and query the table song_history. This is how Insanity stores recently playing information - this comes from our data engine.
TBC. However as a proof of concept, you can currently visit the following URI to dump the next three shows:
http://localhost:8080/wp-content/plugins/songfinder/api.php?method=get_songs&station_id=1&start_time=1517140560&end_time=1517183767