How to reduce the size of audio emission coming from a VideoGUI

I have a video playing from a videoGUI part, and it works fine.

I want to have the audio playing at a loud volume, however if I set the volume to something such as 20 then the audio is audible across the entire map, over 10000 studs away.
There seems to be a very very large fall-off range.

I want to keep the volume level the same but make sure that the audio is only heard in a much much smaller radius.