Yes I use it too for other things. However I wanted to simply convert AAC to AC3 and copy the video stream. HandBrake doesn't like to do that. I wants to encode everything and honestly I just wanted a quick 30second audio conversion.   What I'm doing honestly is really easy there just didn't appear to be a way to get FFMPEG to work or at least I couldn't and now I have an easy solution that fits every need I have. Between FFMPEG and HandBrake I can do about everything I need.