XBMC became Kodi, you can still get that 10ft UI and it integrates with local media files like ripped DVDs and Blu-ray, or it'll interop with any streaming service, or it'll interop with high seas URLs.

That gave way to Plex, which is a webapp to host your local media, which has grown very large and is out of favor. Jellyfin and others have taken up the mantel.

In-between the two are the *arr suites of software which automate file sharing.

It's a rabbit hole if you're interested. Feel free to google any of these names and you'll find a glut of how to articles online.