I used to listen to winamp radio all the time cuz there was always something I liked in the radio library.
I've been away for quite some time granted,but I log on tonight and there is absolutely nothing to choose from!
What happened?

Everything is "Shoutcast" now.

Open Winamp, then press ALT + L to make the "Media Library" showup. Scroll down to "Shoutcast Wire". Read about what Shoutcast Wire is, then click the "Discover" button and choose "Music" from the right-hand pane to look at music stations (there are roughly ~500).
Once you choose 'Music' there is a list of "related tags" you can click on to refine your search.

Hope this helps.

that helps lots,thanks Shifty.