To access the live audio stream click here.
The opera begins at 7:30pm (19:30) in Nürnberg which is in CET (GMT+1). To convert that to another time-zone click here. I’ve got the little part of 2nd Philistine, and I’m only the third scene, which is about 20mins in.
Apparently BR will be broadcasting a live performance in 5.1 for the first time, which presumably means that one will feel like they are right there in the theatre, with the rustling of lolly wrappers in perfect surround sound.