Do you need help with that project?
And I agree, we need all-in-one.
I tried rescently anotehr big front end, which is more like windows-media-rom center. It's called GameEx
. Had some nice option and possibility of custom setup for many emus including built in mame front end. But IMO it is slow, limited in options for not-mame emus and there is no options for per game settings and no extra stuff (like music). Add to that 20 bucks fee, and huge NO for me.