Apple ipod

Is there an application on the iPhone 3G works as an FM transmitter so you can play music from your phone to the radio?

I need something for the transmission of music on my phone to the radio and then also transmits the radio to my iphone.

No, you should buy the adapter I to receive one that is very good. Check out this site: http://www.iworld.co.uk/c/iPhone_Accessories.htm They did not intend to add an FM transmitter for new operating system in July do not think the iPhone in its own sound support. They let you control your FM transmitter to your iPhone with the new operating system, but the product itself it must support if you should buy a new FM transmitter if you have a moment, but not much difference. Search YouTube REVEIW see FM Transmitters

Satechi Ultimate iPhone 3G and 3Gs FM Transmitter