I live in an apartment complex. My bedroom wall and my neighboers living room wall is shared. His entertainment center is up against the shared wall. Needless to say I have to wait to go to bed and it wakes me up every morning. I went so far as to put up 2 inch think styroform insulation on the walls but it does help at all. Any sugguestions on what I can use to block the sound that I can take with me when I leave. Remember its an apt so I have to put it on top of the drywall in a way that could easliy be removed with minimal damaage to the walls.