For my birthday last year my wife gave me a Kindle Fire. While I've downloaded and read some novels and short stories on it, for me the Kindle's main function is a conduit for me listening to audiobooks.
Other than audiobooks and ebooks, the main function it serves is a platform for playing Angry Birds--myself, wife and daughters.
I obtain my audiobooks through Audible.com now that audiobook CDs seem to be on the way out, and on average are more expensive. An additional treat is that Flank Hawk is available on audio through Audible.com and through iTunes (Yes, I've listened to it several times) and the audiobook version of Blood Sword is in production, with Michael Slusser once again narrating.
As a side note: The audiobook version of Flank Hawk is currently $1.99 (92% off the retail price) if the Kindle version of Flank Hawk is downloaded first ($2.99) under the Whispersync grouping. You don't need a Kindle to accomplish/obtain either or both formats from Amazon.com/Audible.com, and you can even burn an audio CD of Flank Hawk if that's the preferred format.