Issues recording (DJM 900 & MacBook Pro)

Not sure if this will help, but Audacity seems to have all sorts of issues recording.  I have been unable to use Audacity to record from a 900NXS2 (I use 64-bit Windows, I think that's my particular issue).  I was able to use Rekordbox to record from the 900NXS2 over USB (didn't even know before that Rekordbox had a record feature).

@Michael > That's not true -- its only issue is that users expect it to have ASIO support out-of-the-box, which it does not. Once configured properly, it works amazingly well.

@Pulse, you're obviously the expert, and I really don't have a good grasp of audio interface technology and software settings, so I'll defer to you.  I will note, however:

(1) - Searching with Google, it appears that there are a number of people with difficulty recording from a DJM via a USB out to Audacity.  I spent about an hour over the weekend searching forums and watching YouTube videos, experimenting with various settings, and couldn't figure it out (I'm outputting from a DJM 900 NXS2 via USB to a laptop running Windows 10).  So at the very least, it would seem to not be very user friendly and to require some good knowledge of various hardware/software settings (which I confess I don't have).  I had no problem once I tried using Rekordbox to record.

(2) - There seem to be forum responses from Pioneer DJ (see https://forums.pioneerdj.com/hc/en-us/community/posts/205359133-How-to-record-with-djm-900-nexus-2-) suggesting that Audacity will not record if installed on a 64-bit operating system and that the workaround is sufficiently complex that other software should be used.  Apologize if I misinterpreted this response from Pioneer DJ.