This example demonstrates Safari's hidden ability to playback "protected" (purchased) content that has been purchased through iTunes. A random "protected" media file should begin to autoplay. This even works on iOS, as long as the device has been synced with the computer running nTunes!

Since, behind the scenes, Safari and iTunes both use QuickTime to playback the media file, in theory they should be able to play ANY of the same types. This includes Apple Lossless, MP3s, WAVs, AAC and even content protected through Apple's FairPlay encryption.