I am using Movie Studio 17 Platinum
If I select the movie segment in the top Auto Preview box I get sound. But when I play the combined video segments along the bottom track I do not get any sound. Sliding the volume bar in the sound track does not work. Sometimes I get a change between Off(solo) and Muted (yellow font display) but that does not help. In the top of the volume box is a letter M (muted?) in a circle with an off indicator. Clicking on the M symbol does not turn the sound on. ALso I do not get any sound when I make the movie.