If you're using DLNA/UPnP for streaming (whether that's using Plex, Jellyfin, Kodi, or a simple streaming application like Universal Media Server), streaming should "just work" on compatible devices. How this works depends largely on the device you're using, but smart TVs often show media...
First, you need to nominate a device as a server to house all of your files and run Plex Media Server. You can install Plex on Windows, Linux, macOS, and even on dedicated server software like FreeNAS and onNAS hardwarelike theSynologysystem (you can seeall their supported platforms for ...