here's an interesting way to explore radio in the usa available on the
internet: yesnation, at http://yes.com/yes-nation , by daniel goldscheider,
harry gottlieb, & kris hopkins.

a visualization of the map of usa radio tunes. when a new song starts
somewhere, the map shows the song's name. click a city to get a list of
radio stations. click one and it streams in. see the neural.it review of
this flash work: http://www.neural.it/nnews/yesnation_e.htm

ja
http://vispo.com/misc/ia.htm