Winfast problem

Calling all Winfast experts. I have connected up my video camera to my computer and via Winfast, can play the video directly onto my computer with vision and audio working perfectly. However when I record/capture any footage with Winfast - I'm getting no audio at all when I playback what I've recorded. Vision is perfect but no audio. I've checked all my Volume Control Playback and Recording Settings - all appear correct. Does anyone have any other suggestions? Thanks in advance.