Problems with recording

Hello,
I’d like to record audio (on system level, so before it’s sent to aplifier) on my PC, but Audacity doesn’t see any recording device. I don’t have any microphone plugged as it’s not required to record audio on system level. . I tried using Transport->Seek audio devices (or whatever this option is called), but it doesn’t change a thing.

To PC I have connected USB amplifier Denon PMA50, system Windows 10, Audacity 2.3.2.

Is there a way to record sound in my case?

I’d like to record audio (on system level, so before it’s sent to aplifier) on

Streaming audio from the Internet?

[u]Tutorial - Recording Computer Playback on Windows[/u]. If you have Windows 7 or later the WASAPI loopback method usually works best.

Yes, it works. Thank you very much.

I tried to follow manual, but had problems with that one https://manual.audacityteam.org/man/usb_recording.html