Reply to I just bought the vinyl revolution pack USB 20 with a DJM-404 mixer, and there seems

I just bought the vinyl revolution pack USB 20 with a DJM-404 mixer, and there seems to be some disagreement between us

The way it looks from my p.o.v:

Both decks are working properly when playing only one at the time. But when i play both simultaneously they interrupt eachother, no matter where the crossfadior is set (1-2). And there is a slight difference in the volume between the channels.

Asio4all is already installed.

I have a std. internal soundcard, and the USB soundcard connected.
Deck1 is connected to the USB. When spinnig only deck1 everything
looks ok. Same with the opposite deck But when spinning deck1 with the crossfader set to 1 and then when starting deck 2, i`m suddenly listening to both songs simultanously even if the crossfade is set to 1..
Help?...........Anyone?

Posting the configuration report as well...