Here are the sound wave nodes in the content browser being brought into the sound cue editor. The sound wave nodes are my music files in .wav format, imported into UDK and then converted/compressed by UDK’s sound previewer. I actually had problems importing two of the files at first. After researching the problem I discovered that UDK only accepts 16bit audio and Cubase exports .wav in 32bit by default.
Once imported I could edit the sound wave nodes in UDK’s sound cue editor which works with a nodes based GUI. Using various different nodes and audio distance algorithms, several different environmental effects can be achieved.