To whom it may concern:
If somebody have installed the ioBroker smart home
i have implemented a new adapter that based on the JSON/RPC-protocol.
the adapter creates some datapoints for server/player/favorites/playlist in iobroker
which you can use to show it in a visualization (also provided with iobroker), to track or control the LMS
actually i use the adapter to control 3 squeezeboxes in different rooms

this is an example of my created view:
Name:  squeezeboxrpc.png
Views: 497
Size:  53.5 KB

not all control functions of LMS are implemented at the moment.
documentation is available in github
feature requests are welcome