Since the redesigning of the audio system in Windows Vista, it has not been possible to set the default output device for the entire system through software. Unfortunately, most applications do not have the option to select an output device built-in. Vista Audio Changer steps in and changes the default output device to replace this missing functionality.

Vista Audio Changer allows you to change the default output device in Windows Vista via different methods:
- Via Windows Media Center
- Via the system tray
- Via the user interface
- Using a Hotkey
- Based on running applications