With some materials from https://github.com/jnylen/spotify-backup, and thanks @Iristyle for the notification.
Assuming you saved in json, you can convert them with something like `py -3 .\spotify-backup.py -l .\spotify_2017-06-02.json -f xspf xspf_playlists_directory`
Separate MD/Txt : new option for format
Export more data : add profile, albums, tracks, collaborative playlists
Allow json indent : to have pretty output
Todo : txt/MD output for all data
Alexandre L
Marco
Casey Chu
Erik Westrup