Well, I just got another PODxt so I wont really be needing the iso box/booth, but I would still like to make the room more soundproof, so I can at least play my classic 50 turned up a little bit without disturbing the neighbours. What would be the best way to do that? I doubt soundproofing foam all over the walls would help enough. What about putting up some sheets of 3/4" MDF on the 2 walls that are parrallel to the outside brick walls, and then line them and the other walls with soundproofing foam? I'm open to any and all suggestions....