Depending on your google account, there will be two different user interfaces.Choose Output in the menu and choose the Multi-Output device, I called mine ‘MergedOutput’.You can rename the device by clicking on the name of it in the left menu.Tick the box in the ‘Drift Correction’ column for Built-In Output.Check the boxes at the ‘Use’ column next to Built-In Output and Soundflower 2ch.Click the + button at the bottom left of the window and select Create Multi-Output Device.Go to Audio MIDI Setup ( Finder -> Go -> Utilities.Once it is installed, you will be using it plus your Macs sound controls to manage your audio. At the time of this post, the latest version is 2.0b2. To begin, download Soundflower and install it.Soundflower is a virtual audio device for your Mac that is designed to allow audio to be routed to different applications. Have you ever wanted to stream audio while you were on a hangout, but were unable to because of feedback in the Hangout? Well, this is the solution if you are using a mac.