How do I play my old iTunes library offline on my MacBook Pro?
I just upgraded from High Sierra to Monterey. The Music app will let me see my old iTunes library in the "Songs" tab, but it won't show the albums, and the songs won't play when I'm offline, even though they're still on my hard drive, in the iTunes Music folder. How do I integrate my existing library, which I burned from CDs and didn't buy from Apple, into the new Music app? How do I play those songs offline? Do I have to pay for Apple Music just to access the music I owned before I installed Monterey?
MacBook Pro 13″, macOS 12.0