You can route audio from one application to another (e.g., from a browser to a spectrum analyzer or a VST host) without needing physical hardware loops. How to Install Vbcable-a-driver-pack43.zip
Acts as a "virtual bridge," allowing you to send audio from one app (e.g., a music player) directly into another (e.g., OBS or a recording app) as if they were connected by a physical cable. Vbcable-a-driver-pack43.zip