Sorry for switching the language, but my English is much better then my French.
After some experiments I´ve got this wroking. The trick is the app “Network Audio Remote” from Sony für pads and smart phones. There you can connect the NS510 direct to the stream originated bei Sébastien´s SWYH. You will find the stream under playlists with the name of your computer. I´ve tested this with Android 4.1.1
Again, thank yout for this tool.