I thought I fixed Yes & No by loading translations provided by Qt, but I failed to notice that there is no support for Finnish. I'll make them translatable then.

Resetting had that in mind, but I'm using cover.jpg files and forgot about embedded covers. I'll see what can be done.

I have that in plans.

By "reset", do you mean something like "tracker-processes -r"? I think that's too dangerous to have it in any other place than the settings window.

Refreshing the song lists when you modify metadata of a song could probably be automatic (it already happens each time you add or remove an item from the library).