So, I've been stuck on this video for a bit now. I know that she's not really saying anything that makes any sense in any language, but to me, it all sounds like she really is speaking other languages.

That's the whole point of this video (some people don't get it). It's meant to show that to people who don't speak the language, as long as you have the right inflection when speaking it, it may as well be the language.

Take a listen to Sara, she's 19, she's Finnish (I love the Finns). She's awesome.