[linus@archlinux ~]$ ls -l /dev/sound/
ls: cannot access /dev/sound/mixer1: Permission denied
ls: cannot access /dev/sound/dmmidi1: Permission denied
ls: cannot access /dev/sound/sequencer2: Permission denied
ls: cannot access /dev/sound/sequencer: Permission denied
ls: cannot access /dev/sound/audio: Permission denied
ls: cannot access /dev/sound/dsp: Permission denied
ls: cannot access /dev/sound/adsp: Permission denied
ls: cannot access /dev/sound/mixer: Permission denied
total 0
c????????? ? ? ? ?                ? adsp
c????????? ? ? ? ?                ? audio
c????????? ? ? ? ?                ? dmmidi1
c????????? ? ? ? ?                ? dsp
c????????? ? ? ? ?                ? mixer
c????????? ? ? ? ?                ? mixer1
c????????? ? ? ? ?                ? sequencer
c????????? ? ? ? ?                ? sequencer2
[linus@archlinux ~]$ su
Password:
[root@archlinux linus]# ls -l /dev/sound/
total 0
crw-rw-rw- 1 root audio 14, 12 2007-06-04 22:11 adsp
crw-rw-rw- 1 root audio 14,  4 2007-06-04 22:11 audio
crw-rw-rw- 1 root audio 14, 25 2007-06-04 22:11 dmmidi1
crw-rw-rw- 1 root audio 14,  3 2007-06-04 22:11 dsp
crw-rw-rw- 1 root audio 14,  0 2007-06-04 22:11 mixer
crw-rw-rw- 1 root audio 14, 16 2007-06-04 22:11 mixer1
crw-rw-rw- 1 root audio 14,  1 2007-06-04 22:11 sequencer
crw-rw-rw- 1 root audio 14,  8 2007-06-04 22:11 sequencer