As a follow-up to Epic Games' release of a free version of the Unreal Engine last month, the company has now posted over 160 video tutorials which demonstrate the various uses of the Unreal Development Kit. Roughly 20 hours of footage were created by technical education company 3D Buzz, with topics ranging from user interface to game physics to cinematics.

Alien54 writes: "The fine folks at the MIT Sound Media Lab have come up with a cheap and practical way to focus sound: "A beam of light can be controlled in many ways - it can be aimed at one person in a crowd, spread to fill a room, or projected to create rich, distant imagery. We can now do these very same things with sound. The Audio Spotlight can be used in two major ways: As directed audio, sound is directed at a specific listener or area, to provide a private or area specific listening space. As projected audio, sound is projected against a distant object, creating an audio image. This audio image is literally a projected loudspeaker - sound appears to come directly from the projection, just like light." While still under development, they are testing applications of the device in collaboration with several of their media lab sponsors in preparation for eventual commercial release."