Advice and answers from the Lightstream Team

An audio asset can be added to capture an external microphone or your computer's audio.

Please be aware that if you're currently capturing a window or display asset, then your audio will automatically be brought in via that asset and there's no need to add another one.

If you're using a webcam you should add your audio source under the "properties" of your webcam as seen here.

To add an Audio asset you'll need to add your computer to your Lightstream account using the steps found here.