I am both happy to see such a useful software and saddened to see that it's reimplementing tomahawk [0] from scratch. Let's see where it all leads! [0] http://www.tomahawk-player.org/ .
Part of the reason for having started mopidy was that we wanted something MPD like, but with Spotify support, which at the time was not reasonable to integrate directly. Now we've evolved quite a bit since then and are now at a stage where we are modular music server, where the MPD frontend is just one of many possible ways of talking to our server. Additionally everything is an extension, so we don't end up like som…
also, i think part of the reason why i moved away from mpd, and towards cmus, was because of things like ape, and library management. i see there is a beets plugin for library management.
what about cue sheet support? how complex, simple, would it be to add cue sheet support?