Enhanced ebook by Gleick

The Telegraph reporting:
The days of an ebook as a copy of the print version could be numbered. The enhanced
ebook is here.While it’s true that you can search and highlight the text of an ebook,
typically they have so far been facsimiles of the print version. Publishers
have begun experimenting with ways to add more to ebooks.
At the moment, this mostly means adding videos and, in some cases,
interactive graphics but the potential is clear, particularly for non-fiction.
How much better would a book about music theory be, for example, if
you could listen to the music being discussed, right on the page?
One of the more recent enhanced ebooks is The Information, by James
Gleick. Gleick is a science and technology writer whose first book Chaos,
was published in 1987 and is credited with bringing the concept of chaos
theory to a mainstream audience.
His new book is about information theory and begins with the talking
drums of Africa and from there sweeps broadly across all manner of
topics including the cryptography, the invention of the telegraph, DNA
and, perhaps inevitably, the internet.
http://www.telegraph.co.uk/technology/technology-video/8434800/Wire-tapping-video-with-ebook-The-Information-by-James-Gleick.html