Change your Slack status to the currenly playing track in MPD.
This doesn't integrate as an official API user so is slightly more annoying to setup.
The easiest way to grab the data needed is to open the team chat with the web
client and open a JS console. Then grab the following,
// this is for --api-token
// this needs the site name prepending, then pass to --api-url
// usually just /api/ so you need to pass https://whatever-team.slack.com/api/
// this is for --version-uid
Then you should be able to run it like so,
$ go get hawx.me/code/mpd-slack-status
$ mpd-slack-status \
--api-token 'xoxs-something-something' \
--api-url 'https://my-team.slack.com/api/' \
--version-uid 'aebcaaeaabebebabcba' \
--default-emoji ":question:" \
--default-text "I'm doing something"
I have no idea how long these tokens last for, yet.