PROBLEM SOLVED
I didn't notice that in Audacity, the "Input Device" had been changed to the built in mic of my laptop, and bypassing nearly half of my DAW. I feel like an idiot.
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I think I blew my mic.
I read the other day (I can't find the article) about how with the +48V you need to use a condenser, you either should or shouldn't have it on when you plug the mic in. Because either would break the mic (I forget which one), if that's true.
I haven't dropped it, or anything. I did risk it blowing a few weeks ago when I treated it as a dynamic and had it right up against the cab.
I didn't know you had to treat condensers different.
Here's a clip of how it sounds now. It's about 3 to 4'' away from the cabinet, and it's sounds like it's across the room, until the signal starts, I don't know, warping?
http://soundcloud.com/leechavezmusic/mic-test
And I'm 150% sure it's not backwards again.
UPDATE:
I tried recording my (acoustic/electric) acoustic via XLR into the Firefly 302, and it sounded the same as posted above. But, I the same setup, except everything going into my PA, and it sounded fine.
I don't have a way to test the mic through the PA, since the PA doesn't have +48V (unless there's another way). So I'm afraid it's the Firefly.
Any suggestions?