Selecting Audio Device to use

I have both a Headet and a Headset Microphone installed on my Windows 7 Pro x64 system.  It appears to simply grab the first in the Audio device class, as displayd top down in Device Manager, with not means to select another device when multiple are present.

As a user has no means of prioritizing how the devices get enumerated in the list, it proves to be unuseful to try computer audio connection since my Plantronics which has microphone for speaking never gets selected.  At lease this is the case with v9.3.14 of the Participant Application.

Is there a means to resolve this or are there plans to enhance this functionality in subsequent releases?