nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpq5ku3muexxejt23sl3hxlcwpqwtm2ls383mhp70dwttz4kutcav8qs3lel8 (nprofile…lel8) You can list your library by songs, and then with the ‘Kind' column enabled you can see any protected files. Should be possible to make a playlist of DRM’d tracks (but haven’t tried this yet)
https://www.askdavetaylor.com/identify-music-apple-mac-itunes-library-drm-protected/