

Oh ok, the first thing that comes to my mind is Kodi. Depending your pc it might be a bit slow but that should work.
Edit: are you on linux or windows? If windows, you should really consider linux. Old pc comes back to life with linux as it needs way less ressources than windows



I can’t remember any name but search for f2f (friend to friend) p2p. Basically a private way to share files over p2p to limited people you have accepted without any use of tracker like P2P use