Sharing tag_cache between different mpd servers

I’m accessing my music on a NFS server from different machines. On each
of those, the NFS mount name is different (/mnt/NAS/Synology on some
machine, /home/music on another ). I’d like to share the mpd tag_cache
on these different machines but I can’t since the root of song names don’t

Is there a way around this, maybe by defining in each mpd.conf a default
root path for the song names?