Microsoft’s wildly popular Kinect controller for the Xbox 360 brought motion-based controls to the masses when it launched in late 2010. While similar technology will be built into a variety of consumer electronics moving forward — especially HDTVs — Mac users now have access to a free app that will add gesture controls to their current OS X computers. Currently compatible with just two programs, iTunes and Spotify, the Flutter app for Mac allows users to control music and video playback by making hand gestures that are recorded and relayed by the PC’s built-in iSight camera. The app is an early alpha build, yet we found that it performs as described and it worked well even from a few feet away. Flutter is not yet available in the Mac App Store, but it can be downloaded for free directly from the company’s website. A video showcasing the app follows below.