Downloading MotionNode 1.4.2 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. This program is a product of GLI Interactive LLC. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The software is included in System Utilities.
From the developer:
MotionNode is a 3-DOF inertial measurement unit (IMU) for use in 3D motion tracking, sensing, and capture applications. The MotionNode sensor module is extremely small, easy to use, and yields accurate orientation tracking results.MotionNode is available as a standard USB device or as part of a wearable wireless network.
You may want to check out more software, such as iPSP Movie Loader or DockWare Pro for Pocket PCs, which might be similar to MotionNode.