This is the 64bit version only.Real-Time 3D Character Animation Software.Increase your animation output per artist and create higher quality animation. Autodesk® MotionBuilder® real-time 3D character animation software can make film and game animation pipelines more efficient. You can create, edit, and play back complex character animation in a highly responsive, interactive environment. MotionBuilder is ideal for high-volume animation, virtual cinematography, previsualization, and performance animation. New stereoscopic toolsets enable you to capitalize on current entertainment trends.

Real-time engine—A real-time 3D engine makes it one of the industry’s fastest animation tools.
Productivity geared workflows—Workflow features enable you to take on demanding, high-volume projects:
Full-body inverse kinematics character technology with animation retargeting
Unified nondestructive, nonlinear editing environment
Live device support
Motion capture editing and data cleanup—A world-class toolset enables manipulation of motion capture data.
Seamless interoperability—With its software development kit, support for Autodesk® FBX® technology, and Python® scripting capabilities, MotionBuilder interoperates with other products in the Autodesk® Entertainment Creation Suites—Autodesk® Maya®, Autodesk® 3ds Max®, and Autodesk® Softimage® software—and with Autodesk® HumanIK® middleware.

Home : http://usa.autodesk.com/adsk/servlet/pc/index?id=13581855&siteID=123112

PS. I used Winrar v3.92 to compress this package