Hi Lowlander, thank you for the reply
yes the second option doesn't work "For the latter you need to right click Player > Choose Player and select the device"
see attached screenshot.

Than after pressing the palybutton, I get "... is switched off or inactive"

As I said the DLNA device "Sitecome-116A" is in the network and from the
Android App Bubble upnp I can get the song from the "MediaMonkey UPnP Server"
and let int play on the "Sitecome-116A". Hence basically the "Sitecome-116A" is working.
Max