Just add any fx vst in the audio track that has a pan in it, turn any other fx off or down and just use the pan control.

http://www.mildon.me/plugins/3dpanner

http://www.vst4free.com/free_vst.php?id=1214

Attached Files (Click to download or enlarge) (Only available when you are logged in)
BB-Audio-Pan.png (133.88 KB, 45 downloads)
Daul-Panner.png (131.51 KB, 40 downloads)