Do I need to be logged in to access MLB Gameday Audio or MLB.TV?
Yes, accessing MLB Gameday Audio or MLB.TV does require being logged in.
You can log into your MLB.TV or MLB Gameday Audio account by clicking on the profile icon on the top right of all MLB.com pages. In the Login window, enter the email address and password that you used to register your MLB.TV or MLB Gameday Audio account.
Once you are logged in to your account, during a live game, you can click on the TV or headphones icon in the scoreboard on the left side of the MLB.com homepage to watch or listen to a game.