Okay, seriously, anonymous Wilco informants for the win!
The Song #1 link, for 10/25, is the one I heard. It doesn't sound quite as good as having been there (there can be something very permeating about live music, and the rhythm came through more in person) but the sound quality's still really good! You can play it with Quicktime on the website or open it through iTunes, though it remains streaming, so I can't imagine this'll be a permanent download--might want to jump on it if you're interested!
It eats my brain. I love it. It can be my special brain-eating friend. I want to eat it.
...nnnhungry. Breakfast didn't take the first time. Nauseableh.