What about Yahoo Sports? I used to be able to click on an "audio" link on the same page with the running scores for the Gators game and listen. Do they do that with the pros?
Of course, that was last year and I have digital cable now so more choices for sports channels. Haven't had to use the net yet.
Editing now -- I just checked Yahoo sports. I've been at the beach all day. Didn't realize I was late. Sorry, Chad. Not sorry the Texans won.

Sorry I didn't get to post in time.
Anyway, if you go here before this game is over
http://sports.yahoo.com/nfl/boxscore?gid=20030907010 you can click where it says "GameChannel." It's not a broadcast like they had last year. But it updates and shows you each play on a football field with stats and stuff as it happens (okay, maybe a minute delay, but if you can't get it anywhere else, it might work). It's kinda cool, but not the same as watching or listening.
Second option - open your Windows Media Player and go to the radio links. Do a search for Miami stations and choose one of the AM stations that lists "Talk Radio" or "Sports Radio" as their format. They're usually a good bet...and free.
Don't know what else to tell ya, buddy.