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I'm trying to records what my soundcard is sending to my speakers (from the command line), so I've read HOWTO: Recording audio from the command line

However, when I do:

arecord -f cd -t raw | lame -r - testing.mp3

the microphone is recorded, not the sound that's going to my speakers.

How can I specify that I want the 'internal' and not the microphone sound?

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