Subsonic: add Demo

README.md

@@ -372,7 +372,7 @@ CMS are a practical way to setup a website with many features. CMS often come wi
   * [Mopidy](http://mopidy.readthedocs.org/) - Extensible music server. Offers a superset of the mpd API, as well as integration with 3rd party services like Spotify, SoundCloud etc. ([Source code](https://github.com/mopidy/mopidy)) `Apache` `Python`
   * [mpd](http://www.musicpd.org/) - Daemon to remotely play music, stream music, handle and organize playlists. Many clients available. `GPLv2` `C++`
   * [Sonerezh](https://www.sonerezh.bzh/) - A self-hosted, web-based application for stream your music, everywhere. ([Demo](https://www.sonerezh.bzh/demo/), [Documentation](https://www.sonerezh.bzh/docs/), [Source code](https://github.com/sonerezh/sonerezh)) `GPLv3` `PHP`
-  * [Subsonic](http://subsonic.org/) - Open-source web-based media streamer and jukebox ([Source code](https://github.com/EugeneKay/subsonic)) `GPLv3` `Java`
+  * [Subsonic](http://subsonic.org/) - Open-source web-based media streamer and jukebox ([Demo](http://demo.subsonic.org/login.view?user=guest4&password=guest), [Source code](https://github.com/EugeneKay/subsonic)) `GPLv3` `Java`