Markus Schulz Live From Electronic Family in Amsterdamse Bos, The Netherlands - July 30th 2011
Live audio and video at: http://www.astateoftrance.com
They're only broadcasting from the ASOT stage, so you'll get to hear the 30 minute segment of Markus going back 2 back with Armin, beginning at 10:45am Eastern / 4:45pm CET.
Probably won't be around, but here's a thread for 15 minutes of Markus. :P