Want to stream audio on GikoPoi but stuck on Windows? Good news...it's possible and easy!
Just install Voicemeeter and Eartrumpet
Voicemeeter lets you create a fake speaker that also acts as a microphone. When the voicemeeter app is open, you can listen to media; when you pick voicemeeter as a microphone for Gikopoi, you'll broadcast whatever the speaker "listens" to.
Eartrumpet on the other hand, makes it very easy to tell programs what "speaker" to play their audio to, and you can also control the volume of the output.