File management systems for large audiobook projects?

I’m working on a 30+ hour audiobook series and finding my file management system is becoming unwieldy. Currently I have:

– Raw recordings
– Edited files
– Mastered chapters
– Multiple revisions
– Author feedback notes
– Final exports

Multiply this by 3 books in the series with 40+ chapters each, and it’s getting out of hand!

What systems, naming conventions, and folder structures do you use to keep everything organized during large audiobook projects? Any software recommendations specifically for managing audio project files?