Noticed this show on Pitchfork.
Official Website: http://www.pitchforkmedia.com/article/news/49982-wilco-add-dates-retribution-gospel-choir-join-tour
Added by chatterton on April 17, 2008
The link you provided says this isn't a Wilco show, just RGC (which is still interesting).
dang! i *thought* that was not quite a large enough venue. edited this event to be correct -- thanks.