Some of the stations I linked have CD quality sound, but you have to pay for the premium service. Free streams are available.
BTW, internet radio stations are in grave danger:
http://www.3wk.com/funddrive.php
The major label music industry and their lobbying cohort, the RIAA (Recording Industry Association of America), haven't quite figured out how to use the Internet to make money yet. So far their response has been to screw the consumer with high-priced cds and to fight music downloads by suing 14 year-old kids and college students. Not quite in the black from those "consumer-friendly" practices, their next ploy is to break the back of internet radio with ridiculously high copyright fees. They are now demanding that internet radio stations like 3WK pay them 30% of our revenue just so we can play the music you want to hear. We don't have anything against artists getting paid for their music - but when you consider the amount of free marketing we give them through airplay and "buy it now" buttons, we feel that we're more than giving them fair consideration for their product. We've tried negotiating with the RIAA for lower rates, but they're not even speaking to us now. So to bring the fight to the RIAA, we, along with several other independent webcasters, are arguing our side in front of the US Copyright Royalty Board. This requires a lawyer and filing papers, which requires money.