Got an iTrip ? Well, gibe iTrip Station Finder a try.
iTrip Station Finder helps you find a spot on the dial where you won't receive any interference from other stations. The application keeps a city-based list of frequencies that are not only clear, but that have clear adjacent channels, as well, minimizing the chance you'll hear crossover from other stations. 
iTrip Station Finder is a free download - but works only in the US.
[ Macinblog's previous posts on iTrip ]
Comments and responses
05 Nov 2003
For those who are Windows-limited, or want an alternative to the software provided, “Station-Finder”, formerly the MIT List of Broadcast Stations, can find all the audible stations for a given city in US/Canada. Site is free.
www.station-finder.com.
17 Dec 2004
Ummm… heres the deal… we can buy itrips in canada… how come we pay for these things and then don’t recive the same service as the US,,, get a staion finder for Canada