You could always take a high-resolution digital picture of your collection and apply OCR (Optical Character Recognition) to the book bindings. Now that you have the names and locations of all the books, you are free to catalog them however you want on your computer. When you want a book, you simply hop onto your computer and choose one, then your computer will show you your picture again with the location of your book highlighted. You can then grab the book off the shelf! I'm not sure how well it would work, but it would mean you wouldn't have to waste time sorting all the books, plus it seems like a pretty cool piece of software to develop.