You need to ask about that in a forum dedicated to Audition. This forum is where we discuss Recording as it relates to Adobe Captivate.
Click the link below. A page should appear. On the page that appears, click the drop-down and choose Audition, then click Go. That should get you started on finding the Audition forum where you can ask the question from those more likely to know how to help.
Best of luck to you in resolving your issue... Rick