How do enable soundcloud playlist_plugin?

I am facing two problems.

I read the manual and I added a playlist_plugin block to my mpd.conf, still this didn't show up when I run mpd -V
Assuming I have the soundcloud plugin installed, where exactly do I fetch the soundcloud:// URL from? In particular, how can I get my user's stream?

I have this in my mpd.conf

playlist_plugin {
  name "soundcloud"
  enabled "true"
}

Here's the output of my mpd -V.

Music Player Daemon 0.20.9

Copyright (C) 2003-2007 Warren Dukes <warren.dukes@gmail.com>
Copyright 2008-2017 Max Kellermann <max.kellermann@gmail.com>
This is free software; see the source for copying conditions.  There is NO
warranty; not even MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Database plugins:
 simple proxy

Storage plugins:
 local

Decoders plugins:
 [dsdiff] dff
 [dsf] dsf
 [faad] aac
 [fluidsynth] mid
 [ffmpeg] 16sv 3g2 3gp 4xm 8svx aa3 aac ac3 adx afc aif aifc aiff al alaw amr anim apc ape asf atrac au aud avi avm2 avs bap bfi c93 cak cin cmv cpk daud dct divx dts dv dvd dxa eac3 film flac flc fli fll flx flv g726 gsm gxf iss m1v m2v m2t m2ts m4a m4b m4v mad mj2 mjpeg mjpg mka mkv mlp mm mmf mov mp+ mp1 mp2 mp3 mp4 mpc mpeg mpg mpga mpp mpu mve mvi mxf nc nsv nut nuv oga ogm ogv ogx oma ogg omg opus psp pva qcp qt r3d ra ram rl2 rm rmvb roq rpl rvc shn smk snd sol son spx str swf tak tgi tgq tgv thp ts tsp tta xa xvid uv uv2 vb vid vob voc vp6 vmd wav webm wma wmv wsaud wsvga wv wve
 [pcm]

Filters:
 libsamplerate

Tag plugins:
 id3tag

Output plugins:
 null fifo openal osx httpd recorder

Encoder plugins:
 null wave

Archive plugins:
 [bz2] bz2

Input plugins:
 file archive curl ffmpeg

Playlist plugins:
 extm3u m3u pls cue embcue

Protocols:
 file:// http:// https:// gopher:// rtp:// rtsp:// rtmp:// rtmpt:// rtmps://

Other features:
 icu ipv6 tcp un

MusicPlayerDaemon / MPD

How do enable soundcloud playlist_plugin? #67