Matt
Here are a couple of screen captures from K3CCDTools Version 3:
- Select the "Program Settings" Icon.
- Make sure that "Capture Audio" is NOT checked.
For my very first avi of Jupiter I also (accidentally) captured audio and Registax spat the dummy and I had to use another application to strip off the audio stream from the video stream, so not all is lost if you forget in the heat of the moment when you get 10/10 seeing...
Cheers
Dennis