Audio not playing on slide launch

Hi Emily,

I have a similar experience. I have an opening slide on some of my projects which has an animated video on one track and music on another track. Both are to start at the beginning of the timeline. When I preview the individual slide, they both start at the beginning. When previewing the entire project, the video begins to play at the beginning but the accompanying music on a separate track may not start until 15 seconds or more later.

My file size is bigger than yours. My courses are incorporating screen recordings of software processes for training. This phenomena has happened on multiple courses that use the same initial slide setup and also may be larger due to screen recordings for software training.