The situation is I have a collection of .wav files mixed in with .mp3 files. I want all of them to have the same Album Artist field content. I can use MP3tag to change the Album Artist field to the desired value. Even after saving, the Album Artist reverts (as seen in the files' directory) to . Why? mp3's change as expected. All other .wav fields change as desired. It's just the Album Artist field. Unfortunately, the app PlayerPro groups albums and artists based Album Artist, not Artist, or Contributing Artist. Files with missing Album Artist is lumped into Unknown Artist.
What do I have to do to get Album Artist permanently changed in .wav's?