there isn't an fm radio app that i have found. there are various apps that stream radio live.....but only various stations, and more than likely, not the ones you want. i would check to see if your local station, that plays the games you want, streams live on the web. if so, you could listen through that. there is an xm/sirius app that you could look into. it costs $ but you could prolly get EVERY nfl game. also, fyi....these built in radios require speakers or headphones to be plugged in. they are what the phones uses as an antenna. so you cant listen to the fm radio through the phone's speakers. you HAVE to have something plugged in. i was disappointed to realize this.
