"How does it work?" from the readme:
A BroadcastServer is used to send a copy of your OSC to a helper application, which is connected to a server. The helper app sends messages to others, and routes any incoming messages back to your scsynth. "b_write" and "quit" are blocked for security reasons.
The server is a modified irc server with maximum message size set to 8192 bytes, the maximum UDP packet size, and no flood control. OSC messages are uuencoded and uudecoded on the fly.