4 - `git clone https://jfr.im/git/plex-to-listenbrainz.git`
5 - Add a webhook to Plex like: https://your.domain.tld/plex-to-listenbrainz/plex-to-listenbrainz.php?user=Foobar&token=
1234567890-
1234-
1234-
214473765
6 (where
`user` is your Plex user's name, and
`token` is your ListenBrainz scrobble token from https://listenbrainz.org/profile/)