Record an audio from browser in Linux

https://itsfoss.com/record-streaming-audio/

dnf install gnome-sound-recorder

The audio record files are going to appear here:

~/.local/share/org.gnome.SoundRecorder

Then install

https://discussion.fedoraproject.org/t/recording-audio-from-browser-or-music-streaming-software-into-audacity/66574

dnf install pavucontrol

Open PulseAudio Volume Control

Go to the tab Recording, in bottom right in dropdown choose Show: All Streams

Start the recording via Sound Recorder

The go back to PulseAudio Volume Control window, the Sound Recorder is going to appear, choose from: "Monitor of..."

Now all the audio streams will be directed to the Sound recorder app