broadcasting a video inside my lan

[DDC423]

He there everyone,
I would like to be able to broadcast a video stream in house on my wireless LAN that all my devices, smart tvs, pc;s and macs cpuld sort of tune into so the content was playing on all devices at the same time with the same information. My sons graduating from high school and we have a background proshow piece that we have created which we want to loop continuously on all the screen in the house. Can this be done?