nbsp's semi-necroded brain gives you another toy to play around with. this time, it's an irc client that connects to town over ssh, then to town's internal irc, and then lets you voice chat on it. freaky stuff.
it's called hubbub and you can look at the code here. that link also includes info about how to build it and use it.
the main voice channel is #hubbub. do not join it through a text client: you and everyone else will have a bad time. text overflow for voice discussion lives at #ruckus, and discussion of hubbub itself takes place wherever you can catch me. there'll be a bbj thread at some point and you can also just ping me on #tildetown.
/msg ChanServ SET #channel history off
this way no history will be kept in RAM.
hubbub is extremely experimental both as an idea but also in implementation. i am considering moving all of the data to TAGMSGs so that voice chat could happen on the same channel as text chat without interruptions (though i still think a text interface for hubbub would be out of scope).