It's true that software like Fraps or Ventrilo can be used for many thing which aren't games; but it seems to me that they are still something commonly used by gamers, not to mention that I believe the overwhelming majority of Fraps and Ventrilo users are gamers.
The question you picked as an example strikes me odd, because the voice chat question is asking about "Popular choices" (subjective, the reason we closed and what I think I voted on), while the recording question is asking "How do I do this". The only thing they have in common is the topic of technology that is accessory to a game - and I'm going to believe that no one voted to close it based off of that (because indeed, we do cover technology related to gaming).
I think Juan Manuel sums it up pretty well in his comment:
The way this question is written invites for subjective or a list of answers. If you could rephrase it to ask a specific question with a definite answer as per the FAQ, it would be great and could get re-opened.
While I understand that the community wants a certain level of subjectivity, I don't think it is necessary to quite so rigorous with close votes. I believe in this instance a simple community edit would have sufficed.
I also don't see a problem with "inviting a list of answers". Some questions cannot be answered with one ultimate truth but that doesn't make them any less relevant.