I wanted a low-profile, quite speaker I could plug my ipod into. I also had these nifty speakers I ordered for the fun of it. I got them here http://www.mouser.com/Search/ProductDetail.aspx?R=AS01508MR-Rvirtualkey66500000virtualkey665-AS01508MRR
. Really it was just to have some fun and I wanted to make the last thing you would expect sound to come from - a book - into a speaker for my gadgets and whatnot.