I just recently installed Vegas Pro 17. I have started editing a video and noticed an issue post-render. I have music in audio track #1, and other sound in audio track #2. When something fairly loud occurs in track #2, the music in track 1 automatically gets quieter for a few seconds. I am positive I have not adjusted the volume on the music track. In fact, I locked the entire track right when I started the video. I'm sure there's simply a setting somewhere I need to turn off, but I haven't had any luck searching for a solution yet.