-- Microsoft will add a special section to its Xbox Live Marketplace dedicated exclusively to the purchase of downloadable music for such music-based games as "Rock Band," "Guitar Hero," and other rhythm-based titles. Gamers will be able to sample the tracks from directly within the Xbox Live dashboard.

-- The iPhone version of "Rock Band" is now available for sale on the App Store. It costs $10 and includes the ability to play with or against four friends using a Bluetooth local area connection.

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