Someone open sourced Populele´s led matrix, I´m looking to add songs

Hi! I bought many years ago a Populele and forever hated the app. I remember it had some occidental songs, nowadays it has only asian ones.

I looked if someone reverse engineered the song upload process or another app and didn´t find it (yet) but I´ve found this cool project that lets you upload complex animations for the fret

https://github.com/Furikuda/Hackulele

Has anyone find a way to get more songs into the app or use another app to be able to use the microphone and leds? regards