Hi Milisa, There is an option at the bottom of your screen "Also share system audio" and a little button that you need to slide to the right. Hope this helps!

also make sure you check that you've given permissions for the browser (ie firefox, chrome, etc) to use the mic. Somtimes its easy to click ''no'' and forget that it has to be set to ''yes''. Look for the icons left to the ''http://'' Cheers

Sure, Milisa. :-)