I know you may not like this idea, but if it is only one station he is trying to record the best thing to probably do is just plug the radio in to the line-in of your sound card. I've been doing the same thing for a couple of years and it works great. When I first started I figiured I needed something like a card or streaming it from the Internet; but sometimes the low tech simple solutions are the best.
The two best softwares I've found are AudioGrabber and AudioTools (unrelatedinventions.com). I used to use audiograbber, but have recently switched do to the superior scheduling capability of AudioTools.
As another note, if it is talk radio you can get by with pretty low bitrates. I've settled on 32 kb/s, 22050 hz and it works surprisingly well.
Edit: I should mention that 32 kb/s, 22050 hz would be MONO. Also, a good radio if you have a little trouble getting a clear signal (especially AM) is the GE SuperRadio. Amazon used to sell them.