Feature description:
Only root folder selection is allowed, which requires that the music files be in that root folder. I think implementing folder navigation would make it easier to select the desired folder by eliminating folders that hinder the display.
Problem solved:
It would fix the display of music files that are in other folders within the root.
Brought benefits:
Greater clarity and avoids having to move files to the root folder
Other application solutions:
Additional description and context:
Screenshots / Mockup: