Although I prefer to use free Replay Media Guide to find Online Radio, Web Video or Podcasts (probably because it is much easier to record streams and podcasts 'coz Replay Media Guide works inside of Applian's Replay A/V and Replay Radio) here is another free online radio tuner.

Quote from http://www.xstreamradio.co.uk/:

XstreamRadio is one of the most extensive radio players of this moment. Besides listening to your favorite radio stations it also allows you to record music.
This player contains more than 1.000 international pre-programmed radio stations, to which you can leisurely listen while working on your PC. With the integrated MP3 recorder you can easily record music or your favorite program from the station of your choice.
Besides being a radio player, XstreamRadio contains useful facilities for browsing the net. Did we already mention all this comes in a small 3 MB package and is totally for FREE?

Free radio player XstreamRadio
Free service to find and record online radio, Internet TV, podcasts Replay Media Guide