Your question assumes there are only two reasons a question is unanswered:
- It's off-topic and the moderators are being lazy.
- We hate you.
I can't speak for everybody but I know at least two more reasons I don't answer things:
- I don't know the answer.
- I just don't see the question.
Your Nook question is very niche. Your Audacity question is also quite niche but Googleable, so I've answered. Aaaand your bountied question probably needs more information to be answerable, so I've commented.