BlitzPlay IS working, and is rock solid, easy to use. BUT its author disappeared mysteriously 1 year ago. So you could use BlitzPlayLite, with the important limitation that you don't have reliable UDP. BlitzPlayPro has reliable UDP, but you can't buy it anymore, so you just can't get it...
BlitzPlay is now a past story, but perfectly usable if you don't need reliable UDP...
BlitzPlay is now a past story, but perfectly usable if you don't need reliable UDP...