Tall bamboo poles, one every six feet or so around the perimeter of the obs strung with fishing line at a height that you won't clothesline yourself on then dangle the CD's from more fishing line. Should make you a real hit with the HOA if you have one!

I vote for some of the adhesive backed foam insulation you use around window AC units on the bottom of the shutter and a bit on the door as well to form a nice seal. Cheap, tidy looking and effective.