.UMX File Extension
File TypeUnreal Music Package
This file is saved in a binary format, which requires a specific program to read its contents.
What is a UMX file?
Music module format that contains background music for Unreal Tournament, a 3D first-person shooter; similar to an .XM or .S3M file, but is saved in the proprietary Unreal music format; can be opened using various audio trackers and Unreal utilities.