All that copy n paste stuff is irrelevant.
Everyone has been following the same process for years without questioning what they are doing.

I re-did the process several ways, and updated how to do this, based on the understanding of &quot;what you are doing&quot; and &quot;why you are doing it.&quot;
http://my.opera.com/Unreal-Tournament/blog/converting-audio-into-umx-format

Following my method also results in a higher quality file, as you will not suffer the same clipping of audio, when you convert to 22k mono.