Children of the Mind by Orson Scott Card, read by a cast of several,
unabridged audiobook, 32 kbps, 22 kHz, about 13.5 hrs. 

Amazon.com
Children of the Mind, fourth in the Ender series, is the conclusion of the story begun in the third book, Xenocide. The author unravels Ender's life and reweaves the threads into unexpected new patterns, including an apparent reincarnation of his threatening older brother, Peter, not to mention another "sister" Valentine. Multiple storylines entwine, as the threat of the Lusitania-bound fleet looms ever nearer. The self-aware computer, Jane, who has always been more than she seemed, faces death at human hands even as she approaches godhood. At the same time, the characters hurry to investigate the origins of the descolada virus before they lose their ability to travel instantaneously between the stars. There is plenty of action and romance to season the text's analyses of Japanese culture and the flux and ebb of civilizations. But does the author really mean to imply that Ender's wife literally bores him to death? --Brooks Peck

From Publishers Weekly
The first two volumes of Card's Ender saga, Ender's Game and Speaker for the Dead, each won the Hugo and Nebula awards for best novel. This adept fifth volume in the series (after Xenocide, 1991) continues the story of Ender Wiggin, hero, social conscience and unwitting mass murderer. Here, however, Ender, feeling the weight of his years, plays only a limited role in the desperate attempt to avert the destruction by the Starways Congress of the planet Lusitania and its three intelligent races. Foremost among those at center stage are Peter and Young Valentine, Ender's children of the mind, copies of his brother and sister whom he accidentally created on his trip Outside the universe in Xenocide. Also central is Jane, the prickly Artificial Intelligence whose unique ability to use the Outside to transcend the light-speed barrier is key to all attempts to save Ender's adopted world. Peter, Val, Jane and their companions must crisscross the galaxy to find new planets for Lusitania's refugees while trying to influence the politicians and philosophers who have the power to stop the Congress's approaching war fleet. Readers unfamiliar with earlier Ender novels may have trouble picking up some plot threads. But Card's prose is powerful here, as is his consideration of mystical and quasi-religious themes. Though billed as the final Ender novel, this story leaves enough mysteries unexplored to justify another entry; and Card fans should find that possibility, like this novel, very welcome indeed. Major ad/promo; 200-copy limited leather-bound edition, $200, ISBN 0-312-86191-5.