I would suggest trying audacity. It’s pretty useful and will give you immediate feedback of what is being recorded.
From: Long Wind [mailto:longwi...@yahoo.com] Sent: Sunday, August 13, 2017 6:41 PM To: Debian Users <debian-user@lists.debian.org> Subject: need help on audio recording it seem alsa isn't easy for me i want to record audio that comes from line in of sound card amixer -c 0 sset Line,0 50%,50% unmute cap command above seems OK, I can hear sound from line in after running the command arecord -t wav -d 10 foo.wav and run aplay, I can't hear any sound Thanks!