The Cure play the Rock Werchter 2012 festival in Belgium on Thursday (June 28th), and part of their set will stream live right here. The Cure are scheduled to play at 10:45 pm Belgian time (4:45 pm ET). It's unlikely that the band's full set will be webcast (they usually agree for only a portion of the set--usually an hour--to stream live) so it's unclear at this point whether their portion of the webcast will start at 4:45pm or a bit later. I'll update as more information becomes available.
The four day festival also features Pearl Jam, Kasabian, The Vaccines, Red Hot Chili Peppers, Noel Gallagher, M83, Simple Minds, Editors, Mumford & Sons, and tons more. *Note that all the bands playing will not be webcast live.