MythTV for the main storage, stored in folders by my genre.

All metadata updated via Picard.

Syncthing to replicate to a Raspberry Pi (2 or 3, I don’t recall which) running Volumio with a DAC board to connect speakers to.

The Pi is in the bedroom, so I only replicate the genres that I want, which cuts down on storage needed on the Pi, and means I don’t need MythTv / NAS / etc. powered over night.