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CYP: Control Your Player

CYP is a web-based frontend for MPD, the Music Player Daemon. You can use it to control the playback without having to install native application(s). It works in modern web browsers, both desktop and mobile.



  • Control the playback, queue, volume
  • Save and load playlists
  • Browse the library by artists/albums/directories
  • Display album art via native MPD calls (no need to access the library; requires MPD >= 0.21)
  • Youtube-dl integration
  • Dark/Light themes


Make sure you have a working MPD setup first and Node version >= 10

git clone && cd cyp
npm i
node .

Point your browser to http://localhost:8080 to open the interface. Specifying a custom MPD address can be done:

  1. using MPD_HOST and MPD_PORT environment variables, or
  2. via a server querystring argument (?server=localhost:6655).

Instalation - Docker

Alternatively, you can use Docker to run CYP.

git clone && cd cyp
docker build -t cyp .
docker run --network=host cyp

Installation - Apache ProxyPass

If you want to run CYP as a service and proxy it through Apache2, you will need to enable several modules.

# a2enmod proxy
# a2enmod proxy_http
# a2enmod proxy_wstunnel
# a2enmod proxypass

To present CYP in a virutal folder named "music" ( add the following to your site config.

# MPD daemon
RewriteEngine on						# Enable the RewriteEngine
RewriteCond %{REQUEST_FILENAME} !-f		# If the requested file isn't a file
RewriteCond %{REQUEST_FILENAME} !-d		# And if it isn't a directory
RewriteCond %{REQUEST_URI} .*/music$	# And if they only requested /music instead of /music/
RewriteRule ^(.+[^/])$ %{REQUEST_URI}/ [QSA,L,R=301] # Then append a trailing slash

ProxyPass /music/ http://localhost:3366/	# Proxy all request to /music/ to the CYP server (running on the same server as apache)
ProxyWebsocketFallbackToProxyHttp Off		# Don't fallback to http for WebSocket requests

# Rewrite WebSocket requests to CYP WebSocket requets, (also converts wss to ws)
RewriteEngine on
RewriteCond %{HTTP:Upgrade} websocket [NC]
RewriteCond %{HTTP:Connection} upgrade [NC]
RewriteRule ^/music/?(.*) "ws://localhost:3366/$1" [P,L]

Installation - nginx

location /music/ {
  proxy_pass_header  Set-Cookie;
  proxy_set_header   Host               $host;
  proxy_set_header   X-Real-IP          $remote_addr;
  proxy_set_header   X-Forwarded-Proto  $scheme;
  proxy_set_header   X-Forwarded-For    $proxy_add_x_forwarded_for;
  proxy_http_version 1.1;
  proxy_set_header Upgrade $http_upgrade;
  proxy_set_header Connection "Upgrade";
  proxy_set_header Host $host;
  proxy_pass http://localhost:8080/;

Youtube-dl integration

You will need a working youtube-dl installation. Audio files are downloaded into the _youtube directory, so make sure it is available to your MPD library (use a symlink).

If you use Docker, you need to mount the _youtube directory into the image:

docker run --network=host -v "$(pwd)"/_youtube:/cyp/_youtube cyp

Changing the port done via the PORT environment variable. If you use Docker, the -e switch does the trick:

docker run --network=host -e PORT=12345 cyp

Password-protected MPD

Create a passwords.json file in CYPs home directory. Specify passwords for available MPD servers:

  "localhost:6600": "my-pass-1",
  "some.other.server.or.ip:12345": "my-pass-2"

Make sure that hostnames and ports match those specified via the server querystring argument (defaults to localhost:6600).


  • TypeScript
  • Connected to MPD via WebSockets (using the ws2mpd bridge)
  • Token-based access to the WebSocket endpoint (better than an Origin check)
  • Written using Custom Elements
  • Responsive layout via Flexbox
  • CSS Custom Properties
  • SVG icons (Material Design)
  • Can spawn Youtube-dl to search/download audio files
  • Album art retrieved directly from MPD (and cached via localStorage)