Assuming you're down to mod it: - Positional audio is built in, just play a sound relative to the coordinates of the player - Video screens is harder, you woul

Assuming you're down to mod it: - Positional audio is built in, just play a sound relative to the coordinates of the player - Video screens is harder, you would have to figure out taking the video stream and rendering it to a surface in the world. I imagine you wouldn't want to make new blocks for it, so you could just tinker into the renderer to draw a surface with the video on it somewhere in the world. The rest is just coercing LWJGL to render it