I am taking a shot here, I don't know if anyone will see this. I googled my issue and it brought me here kind of ironically. But maybe you can help.
I don't actually use mp3tag, but I absolutely will buy it if it can do one thing. I have about 1100 folders of music, and after spending a ton of time organizing it, I want to create mass playlists (ie: one for each folder, which usually contains one album). I am not sure this is what the OP was trying to do, but it sounds like it. Also, while I am not a novice, the solution cited sounds complicated, can someone dumb it down for me?
I hope someone sees this and is able to offer some help.