For your setup, you may need to further edit owntone.conf to suit your needs. All files are located in %config%/owntone/ and are created after first start
The OwnTone compiled here was only given the web interface. Chromecast, Spotify, etc. are disabled in this add-on. I wanted an instance to work with my custom integration and AirPlay devices
The named pipe %config%/owntone/music/HomeAssistantAnnounce is created to facilitate announcements via the component