Well first of all...the nice looking bookshelf frame is just a nice looking bookshelf with glass doors from walmart. I just took about 30 dollars to Lowes and made simple changes. As you can see in the picture I just made a simple 3 sided wooden frame and fixed glass to the front with clear silicone. A little wood glue and your done. You could do this with any bookshelf...I just prefer the look of the swinging glass doors; but like I said, they are all stock from walmart furniture dept. 
My only other mods were using UTH's and some 8" strip lights to light each level.
PS If you do try this, don't use sand unless you like watching sand slowly drain from the top shelf to the bottom.
If you have any other questions...feel free to ask; I hope I answered your question though.
-James
