Add 'etc/systemd/system/onlyone.service'

etc/systemd/system/onlyone.service

@@ -0,0 +1,21 @@
+# file located at /lib/systemd/system/
+
+
+[Unit]
+Description=onlyone
+
+Requires=network.target sound.target
+After=network.target sound.target
+
+[Service]
+Type=simple
+
+# change for user you want!
+User=root
+
+# note use your mac address as given by ifconfig and the name you wish to give your player
+Environment=PYTHONPATH=/srv
+ExecStart=/usr/bin/python3 -m onlyone --server
+
+[Install]
+WantedBy=multi-user.target