Quick Dub

Before X1, I always worked with external recorders (either hard disk or tape), even when using a PC to sequence MIDI and run some VIs.  Now I am using X1 with a V-Studio 700.  I have some external MIDI synths as well as the VIs
 
Question: If I want to do a quick dub—that is, make a quick CD of a rough mix—what is the fastest way? 
  
I assume I would need to take the output of the V-Studio interface and somehow capture it as a stereo WAV in the PC.
 
The goal is to make a quick cut for the singer(s) to work with and for my use to evaluate arrangements in different listening environments.  I really don't want to do all the recording, bouncing, freezing, etc. at this stage.
 
Thoughts on the easiest and fastest way to do this?
 
Thanks.

Thanks.  But wouldn't I have to record the external synths first?  I was hoping I could just somehow capture the audio output I hear in the monitors.

Select all the tracks you want in the mix on the export. External synths must be recorded to the tracks with a soft synth or as audio. 

Select export, choose the options and select WHAT YOU HEAR as your preset. 

Choose the destination and click OK.  You'll have a file of what you hear when you do playback from the computer DAW.