Aerosmith's Steven Tyler and Extreme's Nuno Bettencourt are streaming their cover of the 1971 Rolling Stones classic, "Brown Sugar", as a preview to the September 28 release of an all-star tribute album to the sounds of Muscle Shoals, Alabama.The Rolling Stones originally recorded the song at Muscle Shoals Sound Studio at the end of 1969 for inclusion on their 1971 album, "Sticky Fingers"; the lead single from the project was a No. 1 US hit for the band.