In this lesson, in the example:

Question

Accepted Answer

Hi Tammy,
I have checked and I can't hear an n' in the audio.

Answer

Hi Aaron,
I don't think the recording has been changed and it matches the script.
However, to answer your other question, yes, you could have a 'ne' there but in everyday speech, it often disappears.
Hope this helps!

Answer

Sorry, I sent that accidentally before I finished.. In this lesson, in the same question as Jack referenced, the oral recording says ' que nous n'ayons jamais regardée!' while the text says 'que nous ayons jamais regardée.' Which is correct?

Answer

You're right, the recording says "n'ayons" (at least in the recording that plays for me). I would think that it's correct without the "n' ", but that the "n' " can be thought of as an explétif in this case. However, I welcome input from a native speaker.

Answer

And now the recording has no "n' ", so either it's been changed, or it alternates between different ones.