Quick Overview ++++++ 720p HD MP4 H.264 ACC Trying to edit audio without touching the video (re-encoding or such. Just takes so so long. 3.16gb in parts) Cant get audio programs to save back to video. SoundBooth, Audacity, etc. (Ive tried with other video formats and it works) On a Mac Dont want to have to convert to the format that is currently working in Audacity/Soundbooth cause of the time. Ive heard of demuxing at such?? Any suggestions would be much appreciated. I would be willing to convert, i just dont want to spend hours waiting on a possibly sucky convert.