Home Assistant General
You need the Samba Add On installed and configured
The Sonos requires older SMB protocols so go into Supervisor and set
compatibility_mode: true
in the configuration for Samba and make a note of the user name and password. If you do not set this error 900 will occur when you try to connect.
On Sonos App go to Settings > Media Library and add the Home Assistant folder share, which is normally
//homeassistant/media/music
with the user and password from Samba.
This will then catalogue the music and make it available via