Secure way of listening internet radio

[kaweka]

I'm going to use Winamp for listening internet radio.
Sunbelt Kerio PFW is used and its usage is based on Packet Filter Module.

How should I connect to broadcast servers while having opened only a limited number of ports instead of a wide range of ports ?
What stream format is to be used then ?
What form of URL's does then apply ?
Does Winamp need in such a case any special setting ?

I wish to have define in my FW a packet filter rule
opening a small number of ports.
Now I have open inbound for TCP and remote port range 1000 to 65535, local port range 1024 to 4999.
But I think there could be a way for listening internet radio,
where I don't have to open so many of ports.

Thanks for any hints in advance.

[Sawg]

It's just a standard HTTP connection. Most servers run on the port 8000, but you can really set that to anything. You make an outbound connection to the server port using HTTP and a random port is chosen to complete the socket.

You really don't have to be that paranoid.