Hi littledancer,
I used several Internet Radio streaming softwares like Stream Ripper, Station Ripper, Audio Streamer, Internet Radio Player cause they were all free, had not to pay for them. They were ok, but if you want quality you should think about giving out some money and you'll get something in return. Radiotracker is the one I use now, it is not free, but it is worth every penny IMO
I like it because I have no trouble in using it, I mean you don't have to be an expert to use it, it is extemely easy to work with.