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I'd like to make a piece of software called Shazam listen to my sound card instead of a real microphone on Windows 8.

I reckon the way to do this is to create a "virtual microphone" (that is, not a real hardware microphone), i.e. some piece of software that:

  • takes all the sounds I hear on my computer at any time
  • makes a copy of that audio stream
  • creates a virtual microphone device on Windows (should be seen in Device Manager), and
  • makes the copied audio stream the input of the virtual microphone

How do I do this? I heard a piece of software called Virtual Audio Cable just might be able to do this, but I wasn't able to make it work, didn't figure out how to use it.

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