From Madonna's official fanclub Icon:

Your favorite performances from Live Earth have been selected and put together in a digital album for preorder on iTunes now! The digital album will be released August 14th and features a track from Madonna’s memorable performance.

A physical CD/DVD featuring video from the event will hit stores September 25th.

Proceeds will go to the Live Earth charity campaign to combat the global climate crisis. To get up to the minute information about these offers join the list at Live Earth Music. Preorder the digital album on iTunes now!

Learn more about Live Earth here LiveEarth.Org.