I did a quick look, but couldn't find out who coded the client, so I became really cautious.
Then the FAQ at
http://www.aimini.net/faq/amtc.html?cat=0 gave an error that "The requested URL /faq/amtc.html was not found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request."
Ouch.