Loads of new features have been introduced which were long wanted by the users and several improvements and enhancements have been made it to the existing features present in iTunes 8.
iTunes 9 Features
Improved store navigation, including persistent navigation menu. # Full window iTunes store. For times when that sidebar is just too much. # Previews from anywhere in the store — don’t have to drill down to preview. # iTunes LP includes lyrics, liner notes, video, photos and “more.” # iTunes Extras. It’s like DVD extras, but with iTunes. # Genius Mixes. It’s like Genius Playlists, but it plays forever like a radio station. # App management, letting you set up and arrange your home screens on the iPhone and iPod touch. You can drag and drop to move certain apps or whole pages of apps.
Download iTunes 9 for Windows and Mac
Download iTunes 9