Comentário oficial
The answer from our engineers:
“Framework (Software)” is a loading function that acquires library information in MusicApp using the following native framework (IT Library) provided by Apple.
https://developer.apple.com/documentation/ituneslibrary/itlibrary?language=objc
The library loading function using this IT Library has been implemented since Catalina was supported (5.8.1 ~).
However, it was not displayed in the environment settings, and if the OS was Catalina, it was forcibly read by IT Library.
However, there are some market complaints that rekordbox cannot get the library information of MusicApp correctly due to a bug in IT Library.
As a workaround, from 6.1.1, the environment setting has been changed so that the user can select and set the reading method (IT Library or xml file).



