Movie doesn't export sound

The weird thing is only some of the sound doesn’t work. In the stage all sound plays and works perfectly, but when I export it, only one sound file works. All of the sound files are .wav, they’ve all been edited the same way by the same program, so I don’t understand what’s the problem.

You posted your question in the Feature Requests section where you may
not get a lot of replies as it isn’t a feature request.

Contact support and be ready to provide a link to the project so that they
can investigate the cause. You can try turning on “Debug Mode” from the
Help menu and then see if anything shows up in the log window that helps
explain it.