I am a huge supporter of audio books ....
I started out with some simple but pretty good stuff such as the Nero Wolfe mysteries by Rex Stout. Soon I was in to more advanced books. It takes a while to use audio books while driving on short trips, but I have learned to concentrate so if I can snatch 15 minutes of Dostoevsky, I do it. I have listened to over 400 audio books which has increased my literary output by this amount. I listen to then at home when doing household chores such as ironing.
I never listen to abridged cds, and I try to get audio books with the same translation as my personal library books. Many times I listen to the cd while reading the book. I have listened and read Crime and Punishment, Gone with the Wind, Tender is the Night, the Iliad, and The Odyssey to name just a few. Some of the readers are great, and my local library has been helpful in obtaining cds in unabridged formats. Some of the audio books I have recently listened to are The Beautiful and Damned, Main Street, This Side of Paradise, The Collector, The French Lieutenant's Woman, and Moll Flanders.
There is no question that audio books can vastly increase your reading ability, and can enhance your reading. On a recent vacation trip, I listened to Dickens' Pickwick Papers in its entirety. There is no question in my mind that your ability to concentrate is enhanced and increased with audio books.