nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqjucam952t9cw2qk0awrrpgckss0j67yszlnwen7yvcqt7erxsguqmr0ceu (nprofile…0ceu) a NAS (network attached storage) is just a dedicated computer that stays online and connected to your network and has some storage drives accessible to other computers on your local network. Any computer can be used as a NAS with some small configuration settings. You can even plug in external drives into the NAS computer.
Jellyfin (jellyfin.org) is a server app you can run on the NAS computer. You configure it to point to your media folder(s) on the computer, and it acts as sort of a combination Spotify/Netflix replacement that just runs local on your home network.
And assuming you might also want to access your jellyfin server when you’re _not_ at home, you can also install Tailscale (VPN) on your NAS, which allows you to remote access the Jellyfin server even when you’re away.
… having now typed all that out I’m thinking this is probably better as a blog post. This is kinda the basic idea though. :)