How Multicast works?

I want to implement a little system that will use the multicast technique to stream audio. I don't know much about i开发者_Go百科t, but I understood it is a very efficient technique for streaming.

What does it require me to do in order to implement such system? And how can I know that my ISP even support it?

Multicasting has to be supported by the network, unfortunately there's a low number of ISPs supporting it, making it pretty much only usable within LAN networks.

There are ISPs supporting it but both the originating and the target ISP need to support it.

To figure out whether your ISP supports multicast your best bet is to check their website, call them, or send them an email*