My vision is failing and even the Large Print offerings from the library tax what vision I do have when I'm tired. I started dabbling in e-books about a year ago in an attempt to get even larger print and better contrast and it seems to be working. However, my wife suggested that I try an audiobook and I gotta say, I think I like it- at least the professionally done ones from the publisher as opposed to the synthesized voice of the screen reader.
I find that I tend to stay more focused when listening to a story instead of music, and I finish the story faster than if I read it myself. Not to mention that the odd foreign language segments are pronounced correctly vs my inner voice butchering it or just skimming over it.
I've installed Overdrive on my Nexus tablet in order to access both e-books and audiobooks from my local library. I'm thinking about doing the same for my laptop (if there is an app for Win8) and sync'ing them.
I have noticed that there isn't as big of a selection of audiobooks as e-books, which again aren't as many as hardcopy offerings- at least through my library. I may have to check out Amazon's Audible catalog and see if it would be worth it to pay for the service in order to listen to complete series.