In my opinon it's a little bit unusual to have a checkbox indented below another one, which could only be select if the upper checkbox is NOT selected. Wouldn't it be a better choice to just have a 4th radio button "when an album picture is double clicked"?
I agree with Roadrunner that those options, and especially the way some are hidden without that being clear is not ideal, nor consistent with how MusicBee handles such in most other places.
Usually MB will 'grey-out' options that are not available at that moment.
That's what users will be accustomed to, and I also like that more since it's much more informative.
The same goes for the 'Panels configuration' panel.
Behind 'click here for more' are some hidden options too. (and it's not even an identifiable button)
Also there I would prefer to have those options in sight or 'greyed-out' instead of completely hidden.