The plugin is listed on the "List of Plugins" page and there are several mentions referring to it in the forum, but I can't find the actual Game Voice plugin.
Most of the plugin links on the "List of Plugins" page direct you to a forum post with a download link. The Game Voice plugin link directs you to the "Generic HID" topic in the forum. I've searched the topic, the forum and the site, but all I find are references to the plugin, with no actual download links. Where the heck is it?
A sincere thank you to anyone who can help.