Check your email for "Audiobook selection instructions" sent from Audible. It will contain a unique link to receive one or multiple free audio books from a section of 200,000 titles.
This is their compensation for the Class Action Settlement brought against them.
The link they send you will only show 100 or so titles out of the 200,000. You can browse the rest of Audible and hunt and find the other "Redeem for free" selections. If you have a large wish list like me, go there and that will show if anything on your wish list made it to the free redeemable selection.
Feel free to fill the comments up with favorites that made it to the selection. Again, you will need to activate this through unique email link if you are eligible. These are code biased not account, so emails received on alt accounts can be added to a main account, thanks adi_vastava. An active account is not required to receive the email or to redeem.
P.S. Please do not try have multiple tabs open with "Redeem for free" and buy each for "$0.00", you will be charged for all of them past your free credit.
There might be a way to view the full catalog of 200,000, can't confirm because I already redeemed. See below, thank you dealbreaker00
To get the book to your library please click the following link of advance search after redeeming a code - https://www.audible.com/advsr
1. Make sure you are signed into your account.
2. Then select "Settlement Catalog" and Submit.