Barack Obama may or may not have been in church to hear 'Reverend' Wright's bigoted greatest hits as shown on YouTube, but Obama most certainly did hear Wright preach that "white folks greed runs a world in need", perhaps the most racist statement by Wright yet uncovered.
How do we know Obama heard this in person? He himself says it, in this excerpt from the audiobook of Dreams From My Father:
Not only does Obama not criticize this in the slightest, Obama took the title of his book The Audacity of Hope from Wright's sermon that day.
Thanks to Powerline for generously offering the audio clip for the public to use, and thanks to Barack Obama for the fair use of the audiobook excerpt, not that he can Say Anything about it.