Sound in Debian

First time I'm working on Debian, and already got some troubles with sound system. Alsa doesn't seem to help.

Accidentally, one day later, I've discovered the problem. According to the post, "by default regular users do not (they are not part of the group that is assigned to sound devices). root is the only user that by default can use the sound devices on stock Debian systems". The solution is the following (suggested here): "...making /dev/dsp*, /dev/mixer*, and /dev/audio* writeable by all."

There was still an error with volume control: ""No volume control GStreamer plugins and/or devices found."

The issue has been resolved by running: "chmod -R a+rwx /dev/snd/". The sound is working now!