Book with sound track and visual display

A hard cover book including in combination a cover having panels comprising front and back covers of the book, said panels including a first panel and a second panel connected with a spine panel of the cover, a socket panel of much greater thickness than the cover panels of the book, the socket panel being secured to the inside surface of the first panel and constituting an integral part of one cover of the book, the socket panel having a socket therein facing away from the panel to which it is secured, a filler bound to and within the cover, said filler comprising a group of pages bound together, a tape to which the filler is secured, the tape being secured, immediately beyond a spine portion of the filler, to inner sides of the front and back covers of the book whereby the pages are supported by the front and back covers, in substantially flat condition, when the pages are held open by a reader, end-papers of the filler adhered to and covering the surface of the second panel and part of the surface of the first panel, the filler pages and socket panel being secured to the cover with the top, bottom and front edges of the filler pages and the socket panel being spaced back by substantially equal distances from the corresponding edges of the cover panels to present the appearance, when closed, of a conventional hard cover book.