Issue 6: CD recognised but data not as needed - Language issues
One problem which can happen is that a CD is put in, and ripped, but although the track details are more or less correct, the album details are in Japanese or Chinese. I guess that using the Musicbrainz tool mentioned or other tools, that this kind of problem can be fixed, but right now I don't know how to do it.
It has just happened to me with a Decca CD - disc 1 of a 3 CD set 473 255-2 Mendelssohn String Quartets played by the Ysaye Quartet.
I don't know if I can edit the details in iTunes, or if I need to do something else to get this right.