iTunes/Winamp feature request

When I'm listening to internet radio, I'd like a hotkey that copies the current song information into the clipboard so I can paste it into a "songs to buy" text file. Or take me to a web page that contains that information and/or tries to sell me the song, whatever. Just give me a way to say "I like this song and want to know more about it."

iTunes seems to do this pretty well for songs in your library, but it should do the same with the Shoutcast MP3 tag info in streams.