The iOS app for this year's March Madness tournament is now available, giving access to live game audio and video streams for all 67 games in the tournament. [Direct Link] Unlike last year, when iOS viewers could make a $3.99 in-app purchase to watch all 67 games, for 2013 they are required to authenticate with their pay-tv provider logins before they can watch games that air on TBS, TNT and truTV. Games aired on CBS will not need authentication. However, users will get a four-hour 'preview' window to watch games without authenticating. Live streaming will be available over 3G, 4G, and Wi-Fi. Mac users will be able to watch all the CBS-broadcast games
