On many Linux system - groups are managed through the /etc/group file
which has a line per group. The name of the group is at the start and
the users in the group are at the end.

You can edit file directly (careful you don't corrupt it) or typically
use commands such as useradd, userdel and usermod 

Before messing with audio group - make sure as root you identify the
correct Alsa device and can record from it and confirm by playing back
recording.

To record a 30 secs wav format into file testrec.wav from Alsa hw:1,0 
- use the following 
arecord -d 30 -D hw:1,0 -t wav -f cd  testrec.wav

If you have Audacity - set some music playing and then using Audacity
click record - when the volume levels in the channels move sync to
music - you have found the right device.  Use Preferences to change
record source to deifferent devices - use the Alsa devices and not OSS
or Pulse which may be offered.


-- 
bpa
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View this thread: http://forums.slimdevices.com/showthread.php?t=49584

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