Record streaming audio direct from soundcard - not speakers

How do I record streaming audio from the soundcard? I’ve tried various settings… the audio begins to record but then goes to zero after 2 seconds.
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Win10… I tried downloading the mp3… I get the mp3 link but won’t let me download it… “accessdenied”… Spinitron audio.
Since I can’t download the mp3, I’d like to record the streaming audio from a web page…

The “WASAPI loopback” method is usually the most reliable. See: Tutorial - Recording Computer Playback on Windows - Audacity Manual

Thanks, I did WASAPI loopback also but got the same issue…

By “the same issue”, I assume that you mean that the recording goes to silence.

That “could” be caused by Windows Sound “Enhancements”.
See here for how to turn off Windows Sound Enhancements: FAQ:Recording - Troubleshooting - Audacity Manual