Vista Audio Changer is a system tray application that can change the default sound output device in Windows Vista at the click of a mouse.
Does not work on Win7/x64, hangs, eats resources. Uninstalling. Period.
Does not work for me on Windows 7. It took me a lot of time in trying and searching. No free soluton that works. There is a paid software called virtual audio streaming that can do vista audio changer or windows 7 audio changer things perfectly. http://www.virtualaudiostreaming.net/