You'll need a library card and PIN from your public library. Don't forget - Berry students are eligible for library cards at the Rome/Floyd County Public Library! Go to https://libbyapp.com/interview/welcome#doYouHaveACard to set up your Libby account.
Spotify and Google Play also have small collections of free audiobooks, and several other websites (Open Culture, Loyal Books) provide customized discovery for the public domain audiobooks on LibriVox.