I plan to build some racks for my gear which has outgrown the furniture on which it sits.
As a bibliophile and  (wannabe) audiophile, I have lots of books to store and some quite heavy components to support. I plan to build a very sturdy wood rack using something like mapleshade blocks under the shelves for isolation.  If I build a rack which has one shelf for books inside a rack which holds audio equipment, would this likely help damping all else being equal?  Is there a problem with incorporating books into an audio rack?  My books are relatively large and  heavy textbooks mainly.  
Anyone have experience in this area?