Viwer Mute List 2012-11-05 04:36 am I sent a choir member some .nwc files and a link to the Viewer download. He emailed me that the Mute List is disabled. He thinks it may be a function of his sound driver. Is that possible? He says he has 7 channel sound. How does stereo map to 7 channel? I told him that I think the mute list is a function of the Viewer, and should not be affected by his system.