Awful! Video Recording Problem!

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I recorded about 2 hours of me talking into a microphone (which was on) but Fraps decided to be whacked out, and it recorded sound, but it didn't record my microphone! It even said my microphone was on, the only thing I can think of was it wasn't on Audio Chat setting, which last time I checked, it worked without it being on that setting!

I can either
a) Re-Record
or
b) Narrate over the video (I remember most of it)