I keep my own audio manually organized in annual folders, I have a spreadsheet for shows I've recorded myself so that covers my originals.
I used to use DiskTracker, but now use Neofinder in order to keep tabs on offline files stored on external drives. Neofinder is able to read old DiskTracker files which is great because DiskTracker has not been updated in many years and is not going to be.
https://www.cdfinder.de Neofinder is also compatible with their Windows version, CD Finder.
I have a separate directory for Torrents going back like 10 years.
I have a separate folder for DAT transfer which I did methodically over the course of a couple years.
I have a separate folder for items which I originally backed up to optical DVD media but brought over to hard drives once drive prices made it practical.
I have a separate folder for "taperssection" downloads which I will probably integrate into my "torrents" directory some day
I still keep an iTunes directory so I can sync music with my phone
I made a giant spreadsheet by scanning drives in the old Disktracker, and exporting from DiskTracker. Have not determined if NeoFinder can do quite what I wanted, with regards to keeping file and folder size intact on that export...
The spreadsheet is absolutely enormous, and has several tabs so there are a few different ways to look at the data.
Hope that helps! I know that manual mode is not for everyone.
oh yeah PS I use VLC for most playback unless I'm importing into Audacity