I just final did installed the video screen.
But again am a bit disappointed on the audio quality. it's changing to much in the small area when i walk around or rotate. It does not work like a speaker to. and that is spoiling the effect complete and also not what i want.
I like to have Audio zone. like a rectangle or box that you can use for video screen or audio emitter. This audio zone is having everywhere inside the zone the same audio levels and quality. So you get the same effect as when you listen to some music as example straight playing from your pc.
I like to keep the in this case the sound inside the building. With a falloff outside the zone.