Currently Being ModeratedDec 28, 2012 5:42 PM (in response to Joanne Tolkoff)
Select the clip in the timeline and open the audio tab in the inspector. Under the audio configuration label click the drop down arrow at the right and change stereo to dual mono. Go back to the timeline and right click the clip and select expand audio components. You can them change the volume of the two audios independently. After adjustment right click the clip again and choose collapse audio components.