Used to work fine, now none of those songs in that folder play, either greyed out and no sound. I have some awesome old mp3s from back in the day I'm talking pre 2000 and songs you can't find anywhere now and custom releases from artist and bands etc. Now I can't listen to any of them? I just happen to try to play from that folder and both desktop spotify and phone (S9) won't play.
Spotify premium for years and that local folder used to always stream no prob.