A very useful new accessory by Lingo, allows you to transform your iPhone 4 into a full blown portable radio.
"Known overseas for its iPod and iPhone digital audio broadcasting (DAB) radio accessories, Lingo has developed iRis ($80), a combination battery pack and FM/DAB/DAB radio accessory specifically for the iPhone 4"
Read the full article at: http://www.ilounge.com/index.php/reviews/entry/lingo-iris-battery-pack-fm-dab-receiver-for-iphone-4/