Albums visible in iTunes with exclamation points
I suddenly found that about half my music is missing from iTunes and none of the posted solutions have worked. I've been building a library for 10+ years with mostly CDs ripped in. I can see the albums in iTunes but the music is missing. When I try to play a song I get the exclamation point with the message that iTunes can't find the file. Neither can I - the files are just gone. I even use time machine back up but they're gone from there too. I am stumped - any solutions found? I use Mac Mojave and I don't have Apple Music or iTunes Match.