The Flash Com publishes a sound file to a folder on the
server. The remote Flash client then streams in the sound file and
plays it. Director can stream an. swa or an .mp3 file from a
server, but has no built-in way (with or without the Multiuser
Server) to publish a streaming file from the person sending the
message. There may be other ways to do this that I am unaware of,
perhaps via PHP...