Hi Steve,
the webproxy link in the quick links page doesn't work with shoutcast2. The pls generated not conteins the mountpoint name after "/". The strange thing is that you can listen to a stream but not the stream you expect to listen (the stream of the same account). Probably remain in cache something in the proxy.
Try to wait, to refresh, to exit and login again, restart centova cast.... nothing.
The webproxy link in the dropdown selector on the right top works fine and always. There the pls file contain always the right address with the right mountpoint.