Change computer default audio

Windows

1. Locate the speaker icon in your taskbar, right-click and select Open Sound settings.
2. Click Sound Control Panel found on the right side of the window.
3. The sound options window will appear. The first tab is for Playback. There will be a green checkmark indicating your default speakers or headphones.
4. To change the default device, right-click on the device you would like as the default and select, Set as Default Device.     
5. To change your microphone settings, click the Recording tab and do the same to select your default microphone.
6. To finish, click the Apply button and then OK.

Mac

1. Locate and select the System Preferences icon in the dock.
2. In the System Preferences window, select Sound.
3. Select the Output tab.
4. Make your audio output selection.