@yagodequay: Why flac? Because this sort of sound is very hard to compress without losing quality. Mp3 is right out. I might have tried ogg/vorbis, but flac is a better choice in this case. Both mp3 and vorbis are "lossy", meaning they compress audio by throwing away the parts of the sound you are unlikely to hear. Sharp, dynamic sounds, like clapping, get muddied by lossy compression. So the only choices for this sound, really, were wav or flac, both of which keep the sound perfectly intact. Since wav is completely uncompressed and this file is fairly long, it makes sense to compress it using flac. A side benefit is that flac, unlike wav, can store meta data.
Why do people upload flac? I am good with computers, and these files seem impossible to use. None of my audio programs will open it; I can't use it in my NLE; I just don't get it. Is this really necessary or is this some sort of audio-hacker statement, like, "look at me, I'm so cool, I uploaded an flac file"? Oh, I get it, your audio sense is so refined that anything less is just barbarically low quality. Jesus.