I want to come hang out with you.
While I think that the movie-poster-wrapped acoustic panels are brilliant (BRILLIANT!), you and I both know that Mrs. Buol's opinion should be held in the highest esteem.
God, that is a beautiful room.
I'd try to find some (large) textile print that she likes that coordinates with the existing colors. I actually kind of like the exposed wood frame in this instance, as you could tie in the colors of the surround speakers, the soffit, the base molding, etc.
I mean, if she doesn't want big, thematic, specific art, how about big, generic decorative art instead?
While typing this I realized that I am not an interior designer and you should probably just ignore me altogether.
But, you know, good luck with that.