I'm not sure whether the possibility already exists, but would it be possible to have an option to show only (in the artist tab) the album-artist field and not the artist field when the two are given... Indeed, for soundtracks for example, i usually have different artists, but i  only need one "main" artist (the album-artist) to be shown in the artist list...

Well... that's kind of specific but could help me have a "cleaner" artist list !
Thanks  ;)

Yes right-click on the artist tab, and add an "Album artist or artist" tab, you can remove the artist tab. The only problem is the length of the tab title :( Maybe I'll rename the artist fields.

Whaouh !! Everything's possible  ;D ! I was looking for that feature for a long time and it was already there !