That smfile is playable, extract this rar file to C:\Games\StepMania 5\Songs https://drive.google.com/file/d/1eHHJwd6_cU5gU9yPlBOWf8oVnmqTmgUN/view?usp=sharing Music Sources: Cuphead OST - Inkwell Isle Two https://www.youtube.com/watch?v=aup_iSqqAXE
Right-click 'Download' and select 'Save Link As' if the file opens in a new tab.
