My squeezeboxes already assigned to Kitchen, and Patio, so I re-assigned them to a different rooms (Garage, Bath) same results.
So I decided to go and delete both devices, and the Slim Server Streamer, and start all over again, after I rebooted and regenerate all orbiters, I noticed that I still have all 4 objects of the squeezeboxes still on the floorplan. My experience from the past if you delete a device from web admin, and regenerate/reboot the PC, the objects on the floorplan will be deleted, so here tells me something wrong and that's why I was not able to play from the floorplan!!!!
I couldn't figure out how to delete those object from the floorplan, to start all over again, any ideas???