Offizieller Kommentar
@Danny > Here's the problem...
With your setup, you don't have any way of getting the mix back into rekordbox for recording. So unless you have another sound card, or the capacity to use a built-in connector as an input, you'd have to mix in INTERNAL mode... which would also require a bit of monkeying around to map the mixer, and then routing audio to a channel you don't use on the mixer in order to hear it.
Really, the short answer is: you need a device to input the audio back to your computer for recording.


