I found it worked setting port 8081 through the included program (MBCCRules.exe 8081) and then setting both public and private through Windows firewall settings ... also MusicBee, on Chromecast HD with Google TV. If you have a webserver exception try changing the port, be sure that it reflects the plugin configuration in MusicBee, control again the firewall port if they match. The usage is first connecting to the device and then play. The cover display nicely, hope you solve. Thank for this plugin, I hope for the future it could stream also webradios.