• Download Virtual Audio Cable (VAC)
  • https://vac.muzychenko.net/en/download.htm
  • Install VAC Free (works fine for one input and a few outputs)
  • Copy and paste mmsys.cpl into windows start menu and press enter
  • Under Playback, Right Click on Line 1 and select set as default device
  • Run Audio Repeater (MME)
  • in Wave in you choose Line 1 (Virtual Audio Cable)
  • in Wave out you chose the output device you want the sound to output too
  • Run another Audio Repeater (MME)
  • in Wave in you choose Line 1 (Virtual Audio Cable)
  • in Wave out you chose the output device you want the sound to output too
  • You can repeat the Audio Repeater (MME) part according to amount of output you want

Altenative you can use VB-Audio VoiceMeeter https://vb-audio.com/Voicemeeter/banana.htm