Prerequisites:
The Basics
Overview:
Setting up your map to use music is really easy. For more in-depth
information about triggering MusicEvent's and creating your own custom music,
see How to Create Custom Music.
In UnreadEd, just go to the Options menu and select Level Properties (or hit F6). Expand the Audio properties and click in the Song value area. The easiest way to select a song is to click on one in the Music browser, then hit the Use button in the Song value. You'll have to load a song into the browser first - you'll find the .UMX music files in your \DeusEx\Music folder.
That's it!