We recently moved into our rental home while I will be on shore duty in Texas. One of the bedrooms is being used for our home theater. The room has ceramic tile floor and painted wood paneling for the walls. The acoustics are horrible and we'd like to deaden up the sound a bit. If it was my personal house I'd do some serious retrofit but we can't do this to the rental home.
I was thinking of getting a thick floor rug and some thick padding under it. I know that will help. We can't hang a tapestry on the wall and also can't drill any large holes. What soundproofing or acoustic treatments are available other than standard pyramid foam? I remember several companies selling acoustic treatments for corners but none of them are in business anymore.
Any help would be greatly appreciated.
pic for views (and no this is NOT our room)