Hi, the camera is a Fuji X-M1. I mean, that's what I use for stills, for various reasons, I've considered getting a dedicated video camera but good stuff is $$$. The new micro camera from Blackmagic looks pretty cool, easy enough to get a Nikon to MFT adapter. However, realistically, I think working with what I have is the best thing to do. The audio is from an RME Fireface UCX, mics are omni but in the situation I think that will be fine.
I want to get better sound that doesn't depend on camera distance, and also consistent with the sound recorded for screen captures.
I can't help thinking that the simplest way to go would be to get a video camera that just plugs straight into the computer via Thunderbolt, FireWire, or USB3. Then the video and audio can be recorded in sync. But all I'm turning up in searches is webcams. (Or stuff I can't afford.)
Barring that, the software
Screenflow looks like it might be worth trying out. There's a video on youtube on how to merge separate audio and video tracks with it.
Thank you to the other responses too. SMPTE timecodes is a level beyond what I am thinking about here

Pro Tools seems to be popular but the free version doesn't support video (from their webpage) and to get Express it seems you ahve to buy one of their audio interfaces (and I already have enough of those...!)
