Audacity Out to USB In Allen & Heath ZED436

Hi Guys, Using Windows 7 with Audacity 2.3.2
I would like to know how to dump a song out of Audacity
and in USB to my analog console. I use an Alesis HD24 and need to see levels on the Alesis.
I have armed a chosen pair of tracks on the Alesis and believe I followed
the signal path USB in to the appropriate line in sliders but not getting any levels on the Alesis?
Any assistance appreciated.

Use File>Export to export an audio file in the required format - wither directly exported to a USB stick - or to your computer and then copied to the USB stick.