No sound on any of the videos currently, on purpose.
2) If you really like to make extra work, can you make the next video with out-of-date extensions to show how to use APPS to update?
bad form I know, deliberately having an old tcz
I can't say I like that
It should be
Maintenance->check for updates # a list of old extensions is shown
# select ones to update (if you want all, shift-click selects a range, ctrl-click picks many)
# click Process updates
3) Was that recordmydesktop?
No, I use a two-stage setup with vncrec. This avoids the latency spikes and huge memory needs of the usual screen recorders (because they encode at the same time as capture - vncrec captures first, and then you can take all the time you want to encode later).