Hi guys, at the end it works! Now i'm able to record my microphone with my Flash application and record the audio stream with Red5 server. Red5 is really complicated. There are many Java Beans and classes to handle and it's not perfectly clear to me how they work together.
The free version of Flex Builder for Linux will expire on 31/01/2008. I have to hurry up if i want to use the webcam support too. (to develop Flash Application with Flex Builder is easier and faster than using Flex SDK only).
Bye for now, see you later! :D

Buon Natale!!
Agli amici vicini e lontani :-)

This time we talk about Red5, an open-source Flash Streaming server. If you are going to study and develop Flex application, you probably want to develop some kind of cool client-server application with audio-video streaming support.
The Macromedia's Streaming Server is (very very) expensive. Red5 is free, multi-platform (it's written in java) and almost compatible with the latest version of Flex.

I started working with Flex + Red5 about two weeks ago. The whole framework is a bit complex because it's a mix of  XML+Flash Action Script+Java Servelts. If you don't like javadoc documentation as much as me, good documentation lacks (or sucks, if you prefer), especially about Red5's internal architecture.

If i have time, i'll post few tutorials about how Red5, Flex Builder & Co. on a GNU/Debian Stable system.
Stay tuned!