I've been trying to figure this out too because i'm going on vacation next week and will be missing a game or 2.
But so far i've found nothing,
1.) Local sports stations(on aol radio,flycast,iheart) that broadcast games won't stream games online. I don't know why?
2.) I have XM w/ best of Sirius and they don't have the NFL play-by-play channels on the internet/iphone. They do have the NFL channel that jumps from game to game and give you live updates.
What I decided to do is get ESPN alerts. So it'll alert me when someone scores a TD or something. I really wanted to be able to listen to the game while on vacation but can't find anything. Does anyone know of anything out there?