No problem… I will get it done this weekend latest 
Please note, on my macbook pro where C9 is installed i don’t have any audio interfaces, i just use the built in output at the moment to my iloud via 3.5mm jack…
it’s absolutely fine for composing with Vi’s which i can then transfer to my studio computer… Right now i do not want to install C9 on that one as i am still not sure if i am buying it.
Unfortunately, anything plugged into the mac output disabled the internal microphone, as of 2014 models, which sucks.
So i will be recording audio for the screencast from the macbook’s own built in speakers to the internal microphone… it won’t be the best quality, but the issue will still be clearly audible.
I’ll post a link when done.