I found this post
from 2017 that describes what I'm looking for perfectly.
Basically, my library is full of audiobooks that are hours long and their track lengths are unfortunately formatted as mmm:ss, (so a 2 hour 10 minute 30 second track becomes 130:30). I would rather have it formatted as hh:mm:ss (2:10:30), like it at the bottom of the screen when you play a track. In the post I linked, Steven replied in April of 2020 that this would be an added feature in ver. 3.4, but I haven't seen any instructions on how to make this change. I was wondering if it was in fact added and if anyone knows how to access and configure this option. Thanks for any help!
*edited for spelling