This is a ReWire vsti plugin ReWire VST - VST plugin with ReWire
Download any free 64bit/32bit vst FX plugin rename it > ReWire Audition (64).dll ReWire Audition (32).dll
put it in your plugin folder, scan in Audition for it, now rename the original ReWire.dll > ReWire Audition (64).dll ReWire Audition (32).dll
now replace the one in your vst folder, load it into a track with any wav file in it.
Set bars beats offset to 1:2.00 as Au sync starts on beat 2, you can slide the tracks or offset in your ReWire slave.
I haven't tried it on Mac but it should work.
You can also load into MiniHost or Blue Cat's PatchWork Re: Using Virtual Instruments in Adobe Audition CC CS (MIDI)
I will try and get an FX plug that will load straight in.
I'd like to use this rewire function with Reason 11 in Audition CC.
How can I do this?
This is a four-years-old thread. By the looks of it this worked in Audition 3 - which had Rewire capabilities. They were dropped completely in the re-write when Audition became dual-platform. The plugin referred to is/was a VSTi, and Audition simply doesn't recognise those under any circumstances. And the link in the original thread is dead...
So tha answer to your question is - I'm afraid you can't.