The gig was used as a test of the Akamai live-streaming protocol, which aims to handle live events with large numbers of viewers.
The concert may not have been quite as live as all that, however, as the video went out the day after the concert took place. Indeed, you can still watch the gig on Apple iPhone.
Report suggests that the streaming app worked perfectly, with a large audience enjoying high-quality video and audio.
Akamai works with Apple iPhone OS 3.0 and QuickTime to send streaming audio and video over HTTP from an ordinary web server for playback on the iPhone and Apple iPod touch. The bit rate is adjusted to react to network conditions and maintain broadcast quality.