@neil every day was a LAN party at one place I worked.
We had a very long, thin office and it was annoying to play music as the sound was terrible the further you were from the speakers. So I fashioned some phono to CAT5 adapters, and we routed audio through the network so one music source could send sound to two amps and sets of speakers at both ends of the room.
Also, at the same job, Friday afternoon - if we got all our work done - was LAN game time. We always got the work done 😆