Belkin is demonstrating two new accessories for Apple's iPhone called TuneBase FM and TuneCast Auto.

The new devices allow users to listen to music from the iPhone in their cars. According to Belkin, with one push of a button both FM transmitters will automatically seek out the best FM frequency to play the music from your iPhone or iPod.

TuneCast Auto will be available in the US next month for $79.99 (£40). TuneBase FM will cost $99.99 (£50) and will be available in April 2008.