If you are having difficulties with your sound in Virbela, click the cog menu in the top right corner and open the Mic Settings menu.
You can choose your Microphone on this menu. Click the button with the mic you would like to use.
On Windows you can change your Speakers by clicking the "Windows Sound Settings". On Mac, please see below for further instructions.
Go to System Preferences
Go to the "Sound" subsection
Here you can choose your audio output and input
Hit the Windows key on your keyboard and type: Sound
On this Screen you can choose your output device by clicking on the dropdown menu below the Output section. You can also change your default microphone in this screen under the input section.
Windows 7 & 8
Right click on the Speaker icon on the bottom right of your screen, and then choose "Playback devices" to go straight to your speaker setup, or "Recording devices" to go to your Mic setup
A windows will popup. For setting up the speaker defaults, make sure you are on the "Playback" tab on the top left of the window. Once on the "Playback" menu, right click on your headset and then click on "Set as Default Device"
Once you set it as the default device, the icon should switch from a telephone icon to a checkmark icon like in the screenshot below.
For the Mic settings, make sure you are on the "Recording" tab and then right click on the microphone you would like to use, preferably from a headset, and then choose "Set as Default Device"
You may need to relaunch Virbela for it to recognize the new sound settings.