Taylor Deupree is set to release a book containing photographs and a 3" disc of music. Not sure exactly what the details are, but I always kind of appreciate the creative output of Deupree and the artists on his 12k label. Here's a little bit more about it:
In each Sea Last book printed, there is one missing image; in the back of the book you will find a sleeve containing the original photograph for that missing page along with the 3″cd. Every printed book is missing a different image, making each copy unique and by default limiting the entire production to 238, which was the number of photographs taken.