I usually have a few tabs open at all times, facebook is one of them, as I generally wear headphones and my phone is out of sight and audio range because of that, so that is the only way to contact me, however, if I'm watching a movie, using VLC player, whenever I get a message on facebook and the audio notification goes off, VLC quiets down by I'd say 60% and doesn't recover unless I restart it. I have looked extensively in VLC's settings, firefox settings, chrome settings even windows settings and I cannot find an option that causes this that I can enable/disable. I have google-d extensively also, with absolutely NOTHING even closely related coming up to my issue, and that is driving me insane! I'm running windows 7 ultimate service pack 1. I cannot find a solid name for my sound device/driver, so I'll just say the stock audio card on the Asus Z-97K motherboard, although I highly doubt its a hardware issue. If anybody can tell me anything that helps, I will greatly appreciate it. Thanks!