Interior Acoustic/Thermal Insulation

Here's a great how to when trying to decide what exactly should be done for sound/thermal insulation. It's pretty remedial & a lot more on the subject is out there, but this should point some folks in the right direction. This article does reference some products being sold on the site but the info is not proprietary to their products.

http://www.raamaudio.com/pages/How%252dTo.html