This approach will generally work for radio stations that use StreamTheWorld.

For players that can read .pls files ...
http://provisioning.streamtheworld.c...YWAMDIALUP.pls

For players that need a direct connection ... but less reliable for the future (because IP addresses can change)
http://64.235.213.165:80/KYWAMDIALUPCMP3

For other stations - but replace the callsign (KYWAM above) by going to the site with PC web browser and looking at the what they use in the Flash player.

Note - this way in generally gets a lower quality stream (hence DialUp in the name)