Sorry this issue may collect multiple issues but I don't know how to describe them. I think the UX of cover management is quite bad. It lacks some user feedbacks to understand how the gui is working and so on. And there are some weird bugs(?) that buttons are disabled and the user doesn't know why... Please see the gif I attached. Reproducible: Always Bug 339236 and bug 357634 may be related.
Created attachment 97181 [details] the DAU (user) is clicking through the cover management
Created attachment 97182 [details] the DAU (user) is clicking through the cover management sorry, fixed typo. ignore / delete the other image
Comment on attachment 97182 [details] the DAU (user) is clicking through the cover management when the gif is broken, view it in konqueror or gwenview....
One single issue per bug, please, we don't use grouping bugs. As for the UX: you are welcome to give a hand, be aware that our top priority currently is to port Amarok to Qt5, every helping hand is welcome for that.
Sorry for flaming... You're right, this one won't help anything... I'll close this... I tried to compile amarok and tried to understand how things work but I didn't manage it... Maybe I'll look on it again...