In case you haven't found it yet...
KGNU has made available highlights from many of the Friday & Saturday sets from this year's RockyGrass. These highlights were included in the KGNU live broadcast (Saturday and Sunday, 9am-1pm), and they're now available as individual streams.
There's some incredible stuff here, including Del, Tim, Carolina Chocolate Drops, Kruger Brothers, Blue Highway, Lomax Project, Old-Time Kosmik Trio, and more...
http://www.kgnu.org/rockygrass/(Thanks to KGNU and to all these artists for making this archive possible.)