Tried combing the web for this one with no luck! I don't understand it. When I was first setting up my 3DR Solo, I KNOW I came across an option to turn OFF/Disable recording any audio with my Hero4Blk. But I cannot for the life of me figure out how I did it! I thought it was when I turned on Protune, and there were 3 choices for audio....High, Low & Off. So, I figured I don't need the audio anyway so maybe save myself some file size. Well, I wanted to use my Hero4 for something else, and I cannot find the settings anymore. I don't remember if it was within the Solo App, or on the camera. Anyone familiar with this??