With macOS Catalina, your iTunes media library is now available in the Apple Music app, Apple TV app, Apple Books app, and Apple Podcasts app. And Finder is where you can manage and sync content on your iPhone, iPad, and iPod touch. See What happened to iTunes?
Catalina (macOS 10.15) and Apple's Music app changes to how music apps interact with your media library.
Anytune 2.3 for Mac is required if you using Catalina macOS 10.15.
The Music app in Catalina changes the way Anytune receives information about your iTunes Library. You no longer need to Enable. “Share iTunes Library XML with other applications”.
Anytune should see all songs in your music library even if they are not downloaded (but they do need to be downloaded to play). Anytune syncs with the music library whenever Anytune returns from the background. To force a re-sync click on another app and then back to Anytune. You will see: "iTunes Sync Complete" in the bottom/left message bar.
Allow access to drive
Anytune can access libraries on external drives. You must provide permission (allow access) to Anytune to read a folder. You will be asked to allow access once. the first time to try to access a new folder. You can give permission for the entire drive or top level folder so you will not be asked again.
Switch to another iTunes library
- Quit both the Music app and Anytune applications.
- Hold down the Option key, then open the Music app or Apple TV app.
- In the window that appears, click Choose Library.
- Select a library, then click Choose.
- Ensure you see all of the songs that you expect to see.
(download them if they have not been downloaded)
- Launch Anytune.
If you are using the iCloud Music Library the songs may not actually be downloaded to the computer. You may need to download the songs you want from iCloud (there is a little cloud icon to download the song) and then the songs will show up in Anytune.