I've already done a search and nothing came up. How do I soundproof my room? What am I looking at spending? I want to isolate (or at least minimize) a lot of the sound coming from my HT when it's cranked (I'm at -45 dB and still get complaints from Mom about the sound). I want to be able to crank up the HT to that level and above at 12:30 a.m. without bothering anyone else. Also, I'm interested in learning how to add acoustic treatments to the room to improve the sound quality. If anyone can point me to some DIY soundproofing and acoustic treatment web sites I'd really appreciate it!