I have had djay for years and I have used the app well. I have a iMac 2013 running the latest Catalina macOS. I have all my tracks on external hard disk running thru the music app. I have repaired disk permissions and given djay full disk access and still no joy loading tracks up. I have no drm tracks. All tracks are ripped from cds. I can’t load the tracks via finder on the djay app either.
Thanks for posting to the community for the first time!
Linked below is an FAQ in regards to library management, I kindly encourage you to take a look at the guide, and if the issue persists feel free to reach back out to us so we may look into this further!