Export your song database to CSV - RhythmLunatic/stepmania GitHub Wiki

Download the script: https://github.com/RhythmLunatic/raveitout/blob/master/Scripts/90%20SongCSVGenerator.lua.DISABLED

Place in Scripts, remove the .DISABLED

Edit line 36.

Run parseData from somewhere. Good luck.

(Honestly I should add a screen in SM-RIO for exporting data to CSV)