Hello! This has happened to me three times now, and it's scary so I'd like to figure out why it happens. I'm using the Video (ffmpeg/libav encoder) output format, the QT/MOV/MP4 format, MJPEG Video Codec, and 24 bit PCM Audio codec to bounce videos from Reaper. I always have sound when I do it, but once the file gets to someone else's computer it will occasionally be stripped of all audio. When put back onto my computer, it regains the audio. Most interestingly is that if you import the movie into Windows Movie Maker (the only program one of my clients had), it doesn't even register that it ever had audio and just imports a video. Both me and this client were running Windows 10 (though both computers are upgraded from Windows 8). Does anyone know why this might happen and how I can stop it from happening? It never happened to me before I had to uninstall Reaper because I was experiencing video playback issues.