A tedious process to create a perfect loop audio from the in-game music file, but it works lmao.
Such a shame PyMusicLooper only have the option to read the loop points directly from the tags present in the file (after converting it with foobar2000) and play it, no read the tags then export option.
With this example command: pymusiclooper -i play-tagged --path "E:\PGR Dump\test\m_ev37_battle [1].flac" --tag-names LOOP_START LOOP_END
At least PyMusicLooper can display the loop_start and loop-end in mm:ss.sss format so you can cut it manually in Audacity then export selection.
Everyone can do it, I already uploaded the in-game music files in the mega link.
Sample:
https://gofile.io/d/rU7ZvE