To select the audio output device on a computer running the Windows Vista® operating system, follow these steps:
Selecting the audio output device on a PC running Windows Vista®
- Click the "Start" button in the lower left-hand corner of the screen
 - Click "Control Panel"
 - In the Control Panel, click "Hardware and Sound"
 - In the Hardware and Sound menu, click "Manage audio devices"
 - In the "Playback" tab, highlight the Bluetooth® device
 - Once the Bluetooth® device is selected, click "Set Default"
 - If you made any changes, click "Apply", and then click "OK" to close the window