What is the best way to add a little sound deadening to our basement ceiling so you don't hear everything upstairs? Our storage room/workout area is directly below my daughter's room and my wife's office. We often work out when my daughter goes to sleep or my wife is working in her office. She said you can hear everything upstairs. Treadmill, music, weights clanging around, etc. What is the easiest/cheapest way to absorb some of that sound? Can I just put some insulation up, or is there special sound deadening that will work better?