Audio clips (narrations) are playing on the wrong slide(s)

I have a similar problem and it seems to come down 3 elements. I have a MP4 video created in Camtasia, a photo and a slide used to select either the video or the photo (decision slide). I have tried three different setups and every time I select the photo, the audio from the video plays. The audio also plays if I select the decision slide from the menu (it does not play if I move through the slides using the normal progression). The different setups I have tried are:

·         Decision slide with a trigger to a layer for the video – separate trigger to jump to a slide for the photo.

·         Decision slide with a trigger to a layer for the photo – separate trigger to jump to a slide for the video.

·         Decision slide with triggers to separate slides for the video and photo.

I am using Articulate 360 and Windows 7 Professional. I have also tried this in a new project and the same problem occurs.