Sorry for bumping this post, but I am facing a similar problem in 4.10.2 build, this piece of code is already present in this build and I can’t find any other solution. I have tried working with different format files, but to no success. In the end I am currently splitting my file into a video file and an audio file and triggering them together, but this causes sync issues. Any Suggestions on what I should do to get the Media Sound Wave working in packaged build?
P.S. Everything works fine in the editor.