I've just gone and closed the external link to where I saw that it was for disabling 3D sound ??? RPG's post above seems to support this even idea though it's not the normal way to do things.
Maybe opening a support ticket to Creative might help as I'd really like to know. I can't find much of anything on Head-Fi (surprising at it is setting USB DAC users will have to be aware of). Will have a trawl later.
*Edit* Have contacted Creative about this and asked for an immediate escalation sent to their top-drawer tech guy (or girl). No matter the gender, he'll be called 'Dave' .. again.
Edited by SaLX - 1/22/14 at 10:47am