Yes,
It was the end of my session, so I was shutting down everything. (and my DJ name is Y-Note so, well, why not!!)
You mean I don't need to install any driver before pluging in the U46MK2 sound card?
Well, I've never thought about it.
I'll try tonight.
EDIT(1):I uninstall Mixvibes - U46MK2 Audio Driver and run a CCleaner on the registry.
Then, I plugged the soundcard in and windows told me that UD46DJ had been correctly installed.
But in Mixvibes preferences, here's what I have :


I can't select any input/output, so I think we may have misunderstood.
I do need to install Mixvibes driver (those in the Download Center) to be able to use it, don't I?
EDIT(2):I've just reinstalled U46MK2 Audi Driver (3.0) in a different path, and it's still not working.
EDIT(3):Last thing,
I have an error when I try to load a track (in deck A or B) :
EDIT(4):I've tried Cross 1.5.0, but same result as 1.5.2.
Regards.
Numark TT500 / Numark TT1-Pro / Stanton SA.3 (with P&G crossfader) / Akai MPD24 / Cross 1.5.2 / U46MKII