I am able to add the Music folder of my NAS to Volumio v3 via the UI, and if I ssh into my Pi I can navigate to /mnt/NAS/Prometheus and I can see all the files. However, viewing /var/log/mpd.log it is reporting:
exception: Failed to open /var/lib/mpd/music/NAS/Prometheus: Permission denied
I am using the correct username/password combination, and Guest has read access, but the above error occurs.
The weird thing is it has been working for months with the NAS without issue, but a couple of days ago it decided it just would not.
I am using Volumio v 3.759, upgraded today from the production release in the hope that it would fix the issue I am seeing.