[jhbrandt]

As long as the panes of glass are not loose, get some that self-sticking heavy foam door seal - weather stripping - & put a couple of strips on each pane. - the whole thing might cost you $30.

Constrained layer damping dots are probably bullshit. ~story~ I built a huge studio in a church owned by an audiophile (the whole church was turned into a studio) and saw a lot of crazy stuff there... definitely more money than sense. - He spent $450 thousand on the studio...~end of story~

-- just make sure they aren't rattling. New putty should cure that.

Cheers,
John