How can I edit track info in macOS Tahoe 26?

The forward and backward arrows should appear at the bottom left of the Song Info window if you select a single song and then get song info (cmd+i). If they don't show for some reason you can try using cmd+n for Next and cmd+p for Previous.

tt2

Have you looked to see what the Music app offers in the way of this? At least in earlier OSes you could go to the Music app preferences and under the Files section uncheck keep music folder organized if you didn't want it duplicating music as it was importing it in the library. This only works well for music that is on the same volume. Music on different volumes will not import unless you organize the Music. At least in earlier OSes this is the case. I have yet to try Tahoe.

Same issue, loading a cd that doesn't exist in Gracenote the option to tab through the titles has gone, they have to be done individually. The back/forward arrows still appear in Music on titles already imported. Very frustrating.