The MLB's must-buy (and buy again) At Bat iPhone app's 2009 edition just hit the App Store. There are two versions: The frankly amazing $10 full app, and a stripped-down free version.

Yep, that's double the price of last year's app, but it now has a live audio broadcast for every regular and post season game on top of everything that made the original great: Video highlights, live play-by-play, real-time pitching data, scores, schedules and more wrapped up in a really impressive package.

The free version gives you real-time scores, game updates and league standings, if you're just a regular fan, not a super one. [MLB via Daring Fireball]

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