Dejacky, LOL has two meanings in "net-speak" - either Lots Of Luck, or Laughing Out Loud
In this case, either would apply. The HD's and Lowes I've been in have almost NOTHING that's useful in acoustic treatment - most of their insulation materials are one type or another of Closed Cell foam, which is totally useless in acoustic treatment, because absorption works by air entering the absorption material and experiencing friction losses as it passes through the fibers of the material. The thicker and denser the material (up to a point) the better it works. Closed Cell means that no air can pass, so no absorption happens acoustically.
Standard fiberglass insulation batts do some good, but are nowhere near as dense as the compressed, semi-rigid fiberglass such as Owens Corning's 700 series; Knauf, Johns Manville, and Insulco also offer similar products in various parts of the world, but NONE of them are offered to home-owner types, so aren't available in that type of store in most cases.
This is the first "chain" type offering I've seen, and I've been moderating at two different sites for over a year. Everyone else has had to check the local yellow pages for commercial insulation contractors and BEG them to sell in smaller than truckload quantities.
AP has done us all a HUUUUGE favor by posting this - Ethan and I have linked to it on our other "haunts" to make sure everyone sees it - Thanks, AP, we all owe you... Steve