You can buy a downloadable version of the book from iTunes:
https://itunes.apple.com/audiobook/g...ly/id367776359
$17.95
Or this place has it for $20.99
http://www.highbridgeaudio.com/gloryoftheirtimes.html
Seems to be quite a few "free" pirate download sites that have it too, but I'll leave it to you to find those...