For those interested in the new capabilities of the broadcast plugin:
This morning I was playing with the new broadcast plugin. I found that the new plugin will not work with version 2.1.2 but after upgrading to the latest nightly build (2.1.3) I was able to use the plugin. It seems that the new broadcast plugin makes use of classes that are only available in 2.1.3.
Also, add the property plugin.broadcast.disableGroupPermissions and set it equal to true in order to enable to open permissions mode of the plugin.
Seems to work great, thanks Matt.