The 2008 version of Apple's annual September media event was titled "Let's Rock." For the first time, the event was held at the Yerba Buena Center for the Arts in San Francisco, California. Announcements included new iPod models and prices, new iTunes 8 features and more. The show ended with top-selling iTunes artist Jack Johnson playing music for the audience.Engadget: Live from Apple's 'Let's Rock' event... (September 9, 2008)

iTunes Genius provides users with recommendations from the iTunes Music Store based on the song they're listening to. Genius also anonymously gathers information from users' playlists to become smarter at making these recommendations. The feature is available as a free download.Engadget: Live from Apple's 'Let's Rock' event... (September 9, 2008)