the subsonic plugin is a python file in /usr/share/upmpdcli/cdplugins/subsonic/subsonic-app.py. it does not work out of the box. according to upstream docs[1] it needs the python packages subsonic-connector-0.3.2 and py-sonic. > $ sudo -u upmpdcli upmpdcli -c /etc/upmpdcli.conf > Traceback (most recent call last): > File "/usr/share/upmpdcli/cdplugins/subsonic/subsonic-app.py", line 19, in <module> > import subsonic_init > File "/usr/share/upmpdcli/cdplugins/subsonic/subsonic_init.py", line 19, in <module> > import config > File "/usr/share/upmpdcli/cdplugins/subsonic/config.py", line 17, in <module> > import libsonic > ModuleNotFoundError: No module named 'libsonic' [1] https://www.lesbonscomptes.com/upmpdcli/pages/upmpdcli-manual.html#UPMPDCLI-MS-SUBSONIC