Hi, Mosaic could not detect my Rossini the whole day suddenly, tried to troubleshoot my lan network, everything seems fine, I can use Airplay on the Rossini, my music server connected to it seems fine too, tried changing lan cable and reinstall Mosaic still don work.
First thing to try in these situations is to power cycle your Rossini using the rear panel switch and completely kill and restart Mosaic Control on your tablet / phone.
When you tried airplay was it from the same device that you use to run Mosaic Control?