In 2014 I made a short video with Camtasia 2 for Mac. I've not used Camtasia much since so not yet upgraded. However, I wanted to change a few bits (mainly audio) on this old video but there is no audio track displayed - no sound at all. I exported to Quicktime when I made the video and that has the audio so how do I get it back in the Camtasia project for altering? It must be there.