mpdupdate is a very simple plugin for beets that lets you automatically update MPD‘s index whenever you change your beets library.
To use it, enable it in your .beetsconfig by putting mpdupdate on your plugins line. Your .beetsconfig should look like this:
[beets]
plugins: mpdupdate
Then, you’ll probably want to configure the specifics of your MPD server. You can do that using an [mpdupdate] section in your .beetsconfig, which looks like this:
[mpdupdate]
host = localhost
port = 6600
password = seekrit
With that all in place, you’ll see beets send the “update” command to your MPD server every time you change your beets library.