http://video.cnbc.com/gallery/?video=3000014730
For getting 11 teams in the Tourney, the BE will get $30.8 million paid out over the next 6 years. Uconn gets $1 million of the top for winning. Then, I believe, the 16 teams split $29.8 million. My understanding is the money goes to the Conference and then they decide how to split it.
For comparison purposes, the BE take from the NCAA tourney in 2007 was $14.85 million which was paid out over 5 years (so the last installment will be this year).
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ADD
http://www.tomahawknation.com/2011/3/15/2053126/economics-of-the-ncaa-tournament
Every team that participates earns money. But the NCAA didn't want announcers doing their best golf imitation and informing the viewers how many dollars were on the line for each late game free throw. So they instituted a six-year rolling window where the conference results are averaged across this year's event and the previous five, which diminishes the value of any one game.
It does not dimish the value (except for present value calculations). The conferences get the same amount of money, but over 6 years instead of 1. The free throw is worth the same amount.