Show full artwork in a 150x150px box on mouseover of artwork field in browser

Have an option in preferences to provide this function on a mouseover of the artwork field in the browser listing of tracks. At present the artwork isn't visible in the track browser - it either shows as a narrow strip, or if the row heights are enlarged, just a tiny square!

The preferences could allow a choice of mouseover display sizes. I suggest an option in preferences as some might not want such functionality.