[Zope] What is Flash Communication Server and Help

[Birol BIÇAKLI]

Macromedia Flash Communication Server MX is a server based platform for 
creating and deploying compelling, interactive web-based audio/video 
applications such as video on demand, live event broadcasts, webcam chat, 
and real-time collaboration applications.

This software includes fine properties but, I started to think there is not 
any open source software that includes all of these features. So, I decided 
to get a software that makes only audio/video streaming for now. It must 
communicate two or more clients by doing live broadcasts. If you know any 
"open source" software which has minimum this property and can be run in 
Zope applications, please suggest me.