When I try to record audio with Soundflower, the recording has no audio. What am I doing wrong?

I am an amateur DJ trying to record a mix made in Cross DJ. I followed a tutorial instructing me to use Soundflower to route my system audio to QuickTime and have had no problem routing. Yet when I record the audio with QuickTime, the recording plays no audio. What am I doing wrong? I really need this mix recorded and I have no intention of downloading extra software.