I-Tuner

The Public Radio Tuner essentially allows anyone with an iPhone or iPod Touch to listen to streams from stations across the country.

How to get it:
 

From the iTunes Store:
  1. Go to the App Store section of the iTunes Store.
  2. Search for "public radio" and the Public Radio Tuner will appear in the search results
  3. Click the Get App button on the Public Radio Tuner application page.
  4. After the application is finished downloading to your computer, sync your iPhone or iPod touch with your iTunes account to add the Public Radio Tuner application to your iPhone.
  5. Click the Public Radio Tuner icon from the iPhone or iPod Touch Home screen and listen!
From your iPhone or iPod Touch:
  1. From your iPhone or iPod Touch, click the App Store icon.
  2. From the App Store, click the Search feature.
  3. Type “public radio” and click Search. Public Radio Tuner will appear in the search results.
  4. Click Public Radio Tuner. A description of the Public Radio Tuner application displays.
  5. Click the Free button. It changes to an Install button.
  6. Click the Install button.
  7. Wait for the Public Radio Tuner application to be installed.
  8. Click the Public Radio Tuner icon from the iPhone or iPod Touch Home screen and listen!