Microsoft DirectX is a group of technologies designed to make Windows-based computers an ideal platform for running and displaying applications rich in multimedia elements such as full-color graphics, video, 3D animation, and rich audio. DirectX includes security and performance updates, along with many new features across all technologies, which can be accessed by applications using the DirectX APIs.
The latest version of the Microsoft Windows Gaming API delivers Microsoft's powerful new High-Level Shader Language (HLSL) and features its most-advanced suite of design tools for the development of rich multimedia elements such as full-spectrum color graphics, video, 3-D animation and enhanced audio capabilities.

Microsoft DirectX delivers fast performance for DirectX-enabled games and other rich media software.
This download provides the DirectX 9.0c end-user multi-languaged redistributable that developers can include with their product. The redistributable license agreement covers the terms under which developers may use the Redistributable.

DirectX introduces significant improvements across its suite of APIs. DirectSound offers new audio capabilities, DirectShow accelerates video rending hardware, and Direct3D enhances low-level graphics programmability with new programmable vertex and pixel shader 2.0 models.

The license of this software is Freeware, you can free download and free use this driver & update software.