I'd use Audacity to split single file audiobooks into a file per chapter (or main scene break as som books have no chapters and others have some very long ones.
Audacity is excellent for "fixing" files too. Speech has little below 300 HZ or above 4kHz, so unlike music you can apply hum/ low cut or anti-noise/high cut filters without noticeable damage.
Some samples recorded on a Zoom H4N and edited in Audacity. Not publish quality, but I don't like audiobooks overloaded with music and sound effects. I tried that for production in mid 1990s and it makes the dialogue too hard to follow. Film & TV makers have got poor compared to 40 to 90 year old movies.
Download or play online. About 3.5 hours.
https://www.corvidspress.com/fiction...ne-of-destiny/