Mac App Store is the simplest way to find and download apps for your Mac.To download Sound Stage from the Mac App Store, you need a Mac with Mac OS X 10.6.6 or later. Learn More. Description Limited Time Offer: Sound Stage for $4.99! Over 50% Savings. Special Mac Store Introductory Offer for new customers. Sound Stage helps you create stunning, high-quality video demonstrations for your iOS or Des