x3daudio1_7.dll is associated with the 3D Audio Library and the program Microsoft DirectX for Windows, it was developed by Microsoft Corporation. x3daudio1_7.dll errors are most commonly caused when two programs share the same .dll file. When a program is deleted sometimes it will delete the .dll file associated with both programs. Errors can also occur from a faulty x3daudio1_7.dll file or incorrect versions of the file.