Howdy,
You're not stupid; that's happened with all of us. Apparently AudioGalaxy changed something and it broke the Mac Satellite app, and the programmer hasn't changed it or has decided not to bother. It's not a totally elegant solution, but you can try Sputnix in the meantime (
http://www.versiontracker.com/redir.fcgi/kind=1&db=mac&id=12637/sputnix0.3B.tgz-binhex.hqx). It works well in X, and does all its advertised to do. It doesn't support sharing yet though, and so in turn, you're only allowed to download one file at a time. But the author says he's working on building in sharing, so it may become better with time.
