If you or a loved one have a table saw with a dado blade you can make a great rack. Get 1x12 oak at a home supply and cut 1/2" dadoes (grooves), 1/4" deep across it leaving 1/4 or 3/8 between each pass. Now rip the board into 2- 5 1/4" by whatever length you used pieces. Because you cut the dadoes for top and bottom at the same time, the dadoes will exactly match. Nail or screw a 5" wide piece at each end. Oh yeah, don't forget to put a plywood or masonite back on it.This gives you a box that securely holds as many CD's as you make boxes for. Stain'm, wax'm and stack'm.
Regards, martha stewart