It's now available for Windows 11. It won't run on Windows 10 or below and you need the 64 bit VLC software to run SongBoss. If you want remote request the Standalone version of OpenKJ's Songbook can be run alongside it.
Website for downloading it is
www.song-boss.com and it's free. Its remote request service isn't ready for primetime yet but everything else works. Just a note it doesn't have multiplex controls yet but you can weed out those requests in favor of nonmultiplex versions in the search box