Once you figure out all the different service types you can visit http://<SPEAKER_IP>:1400/xml/<SERVICE_NAME>1.xml http://<SPEAKER_IP>:1400/xml/<SERVICE_NAME>1.

Once you figure out all the different service types you can visit http://<SPEAKER_IP>:1400/xml/<SERVICE_NAME>1.xml http://<SPEAKER_IP>:1400/xml/<SERVICE_NAME>1.xml to get a better idea of the types of things you can do. This was a helpful post after I started poking around: http://blog.travelmarx.com/2010/06/exploring-sonos-via-upnp.html http://blog.travelmarx.com/2010/06/exploring-sonos-via-upnp....