Popping Noise Then No Sound

I have a mid 2007 macbook with 10.4.11. I was listening to things on the internet (youtube, etc.), and it was working fine. I shut off the sound (F3), and a while later I wanted to listen to something else. I pressed F3, and I got a loud popping noise instead of the normal one. I pressed it again to shut off the sound, and got the same noise. I did this a few times, and it kept happening. I tried listening to sound with it turned all the way up, and there was no sound coming out of the speakers. I closed it to look at the speakers and see if there was something in them or something (there wasn't), and it went into sleep for a little while. When I opened it again, the sound was working perfectly fine.
It's still working like usual now - should I take it to Apple and see if something's wrong, or was this just a one time thing? If it happens again, should I just close the top again? What caused this?

Even if it's fixed now? Because it's been working fine since then.

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I've search these discussions but haven't found anyone with this problem.
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Sille wrote:
seems X-FI cards got the problem.... shud be hotfixed by creative.
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http://forums.creative.com/t5/Sound-Blaster/SB-X-Fi-Series-Support-Pack-2-0-05-5-2009/td-p/527485
with this installed over the top,
http://forums.creative.com/t5/Sound-Blaster/SB-X-Fi-Series-Auzen-Forte-driver-2-20-000-HomeTheater-HD-RC4/td-p/53548
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TheMissingBite wrote:
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Popping Noise Then No Sound

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