Sixty-one artists are performing at the iTunes Music Festival in London through the rest of July, and Apple is streaming those performances live all month. You can watch the performances either in the iTunes Store via iTunes on your computer, or via the free iTunes Festival London 2011 app, which is designed for iPhone, iPod touch, and iPad. If you watch it on an iOS device, you can use AirPlay to stream it to an Apple TV 2 to see it on the big screen. follow link
View Extra Audio Details in Snow Leopard
In Snow Leopard, Option-clicking the Volume icon in the menu bar displays a list of sound input and output devices. Choose one to switch to it; it's much easier than using the Sound preference pane. Also, hold Shift and click the icon to set the system volume, which is separate from the general output volume.
iTunes Music Festival Streaming Live This Month
Check out the Take Control ebooks that expand on the topic in this article: