The method of changing audio sources in Vista differs than in XP. Please follow these steps to change the audio source using Windows Vista.

1. Click the Windows Start button in the lower left hand side.
2. Click the Control Panel button.
3. On the left hand side of Control Panel, make sure Classic View is selected. Double click the Sound icon (This should appear as a speaker).
4. Once these properties come up, select the Recording tab.
5. Depending on the sound cards and devices setup on your computer, you may have a list of different options shown here.
6. Right clock on a white space and select Show Disabled Devices
7. Since it will vary on different computers, you may want to select the first item in the list and click Set As Default.
8. You will see a small volume notch on the right hand side. With your music playing, you should see this volume notch show activity (green signal moving up and down).
9. If you do not see this activity, please keep your music going, and select the next item in the list and click Set As Default.
10. Once you have selected and found the appropriate device, simply click Close.