--- a/doc/upmpdcli.txt
+++ b/doc/upmpdcli.txt
@@ -113,8 +113,19 @@
 [[upmpdcli.songcast]]
 == Songcast integration
 
-upmpdcli recent versions support Songcast. See the
-link:sc2mpd.html[description here].
+upmpdcli recent versions support Songcast, only when the sc2mpd extension
+package is installed. See the link:sc2mpd.html[description here].
+
+NOTE: You can ignore this if you are not installing the Songcast
+complements, especially the Sender part. If you do install them, you should
+know that it is possible to control the Songcast Sender from another local
+network PC to snoop on what you are listening (Radio or Playlist). This is
+detectable from the Renderer state, but not obvious. In any case, the
+playlist itself is public (there are no privacy provisions in UPnP), so
+this is probably not a major additional issue. The system will not capture
+anything besides what mpd is playing (e.g. Skype phone conversations are
+out of reach).
+
 
 [[upmpdcli.boot]]
 == Boot time startup