When I click on album art to view larger, the popup window does not have resize control handles. It should also have Maximize/Restore buttons adjacent to the Close button. It would be nice to have a Right click option to scale image at fixed multiplier (e.g. 2x,3x,4x) and a toggle to apply/disable smoothing to scaling. When album art is pixel art, scaling a 200x200 pixel art looks terrible when image smoothing is applied. It's best to have this type of art left scaled at fixed multipliers without smoothing.
B0005 - With regards to R0003, if I move a directory out of the currently viewed directory in MB, that directory does not automatically disappear from the Device --> Storage (Library Tree). I am resorting to using explorer.exe to move the directory since there's no directory cut/paste from inside MB. Hitting Refresh from View does nothing. Collapsing and re-expanding the parent directory does nothing.