Wow, thank you so much for this, my most requested feature finally!
Edit: Is it possible to do this for loved tracks too? I have some loved tracks that don't register as such in musicbee, despite being loved in last.fm. I've tried clearing my files, reinstalling the addon and more...nothing works, some tracks refuse to be loved in musicbee. I wonder if it's the same problem as the play count thing (that music bee query just 1 time for a specific information).