I spotted this device in a search recently and wondered if this may resolve as issue with FS sounds.
In order to separate Cockpit and ATC sounds, between speakers and headset, you needed either a machine with 2 sound cards, or a USB headset. I wonder if this device only $12 would enable me to separate audio streams and use my existing headphone setup, a 4 way headphone amp?
http://tekgems.com/Products/la-music01.htm best wishes Kev