The guys at Belkin are often known for bringing quality products to the Apple accessories market, and with the TuneCast Auto Live (FM radio audio transmitter) there will be no exception, since they have even prepared an application.
This application is simply a simple but effective search for free frequencies to be able to use the Belkin transmitter without interference, which I think is a great idea and you don't just go there trying each frequency for a long time.
Yes, for the moment both the adapter and the application remain exclusive for the United States, but in March it reaches European territory, and we will be attentive ...
Source | TUAW