How to route audio output to any app on Windows 10
I needed to input audio to a browser on Windows 10. We were developing a HTML5 app and wanted to use audio to control it. Specifically, we wanted to route the audio we were listening to (from Spotify) to the browser (Firefox) for use as an input. On Linux, it's much easier to route the audio you're hearing to whatever program. But on Windows 10, this is not always possible without some effort. Some programs on Windows 10 allow you to choose the audio output as an input. An example of this is the Audacity sound editor / recorder. But browsers typically only allow you to choose the microphone as an audio input. Step 1: Routing audio output as an input to a program For this purpose, I found a piece of software called VB-CABLE . I didn't need ASIO in this case, as I was just playing music from Spotify. For ASIO output you should try the HiFi-Cable software instead. ASIO is necessary for those who want to route sound from a professional audio DAW software such as Ableton Live,