There seems to be an error in the config file. I received the following output in the log:
Jan 09 00:04:27 raspberrypi mopidy[686]: WARNING [MainThread] mopidy.file.library /music/Network/flac/ is not a directory. Please create the directory or update the file/media_dirs config value.
My mopidy.conf says
[file]
media_dirs = /music/Network/flac/ | NAS
I mounted the shared folder in /etc/fstab as follows:
DiskStation:/volume1/music /music/Network nfs rsize=8192,wsize=8192,timeo=14,intr
When I navigate to the folder on the Pi, I can see the folder and the files. It is mounted. Is there a mistake in the mopidy.conf?