What is x3 Audio17?
The X3 Audio 17 is actually a DLL file loaded in your Windows operating system. The component is part of the BeamNG technology. There is a troubleshooting page created by the BeamNG. You can use the following page to read more about it: http://wiki.beamng.com/BeamNG_FAQ
If the file has issues on your computer, re-install the DirectX, as recommended by the developer: http://www.microsoft.com/en-us/download/details.aspx?id=35