I learned the basics of editing audio and video a long time ago, out of interest. It’s not a skill I’ve practiced much, but I can see that as a teacher, it will be a useful way to create resources. Just for example, there is an audio clip in my inquiry post for this week. I recorded it on my phone and then edited it on my computer, in Audacity. The edits were small, but took it from almost unusable to almost decent. Admittedly, it would have been better without the sound of the keys thumping back into place, but eliminating that is not so easy.