After this commit https://git.savannah.gnu.org/cgit/emms.git/commit/?id=f7599dc1e1494e79456dfb05e4ddb975563893bb seeking backward does not work for me.
(emms-player-mpd-seek) with a negative argument does nothing. (emms-seek-backward) decreases EMMS second counter and also has no effect on MPD.
