Instructions
Download the SADX motion blur add-on from Media Fire (mediafire.com) or from Download File Access (downloadfileaccess.com). Unpack the archive RAR file using an archive file unpacking program, such as WinRAR or BitZipper.
Install the SADX motion blur add-on files into the SADX game file folder on your computer hard drive. Copy the files to the SADX file folder if you saved the motion blur files in a separate folder. Start the SADX game by clicking the game icon on your computer desktop or the Start menu.
Press the "Shift" key and then press "Enter" when the game starts to open motion blur. Press the "Shift" key and "F12" to enable motion blur. Play Sonic Adventure DX to enjoy the motion blur when you move the character rapidly during game play.