My home theater is in my basement and we recently moved my son into a room above it (not directly but close enough to probably bother him). My basement is pretty much split into two open rooms. The ceiling is approx 8 feet up where the sound equipment & TV is and the room my son is above (it has a pool table in it) has 10 feet to the ceiling. I wanted to replace the tiles but try to muffle the sound as much as possible for the upstairs without ruining the sound or having to watch my movies at too low a volume. I went to home depot (because I was just going to buy the ceiling tiles and replace them myself) but the guy there really had no clue how to assist me (big surprise). They had a special order book that had tons of various drop ceilings with different acoustical & sound deafening ratings but I had no clue how to start & the clerk there was no help. Has anyone here faced this problem or know what to look for? I had put some insulation above the current tiles years ago but it seemed to do little good keeping sound out from the upstairs. Any assistance would be appreciated. Thanks. Also note that I am tring to be as economical (cheap) as possible.