If you read through the main Official Samsung speaker thread, New Official Integration: Samsung Multiroom Audio
They start talking about what you want at around post 250, you should read that whole thread first before you post a new thread, unnecessarily adding junk to the internet. To capture the TuneIn radio stations for your switches use http://musicbee.wikia.com/wiki/Play_TuneIn_radio_stations_through_MusicBee