For what it’s worth: I counted about 85 or 86 “clicks” in 10 seconds. It’s a loud click followed by a quieter click, like as if it’s oscillating towards and away from you. The sound of the click itself is loudest at about 2.6 khz - whether that is simply the sound of friction, or some sort of electrical phenomenon, I don’t know.
The fuzzy area at the bottom half of the spectrogram is the dull roar of distant wind. The clicks themselves show up as spikes, and the intense colors on the right are from where the voice starts speaking. The dark band above 10K is just the data lost from audio compression.
I always hate it when somebody asks for help on a site like StackOverflow, and some smartass pipes up with “Why are you even trying that, why don’t you try ___ instead?”
I don’t want to be that guy. But I am very, very curious about why it is so imperative that you obtain the actual original audio files. Why would similar sounds not suffice?
For context, I am an audio editor / producer / sound designer / Foley artist, and I’ve run into that same problem, of old sound libraries not existing anymore, and have had to find, or create, my own alternatives. So I do know the struggle, but I don’t know your particular situation.