are your user id belong "audio" group?
drwxr-xr-x 2 root root 80 Oct 4 17:28 by-path crw-rw---T+ 1 root audio 116, 5 Oct 4 17:28 controlC0 crw-rw---T+ 1 root audio 116, 8 Oct 4 17:28 controlC1 crw-rw---T+ 1 root audio 116, 4 Oct 4 17:28 hwC0D0 crw-rw---T+ 1 root audio 116, 7 Oct 4 17:28 hwC1D0 crw-rw---T+ 1 root audio 116, 3 Oct 4 17:28 pcmC0D0c crw-rw---T+ 1 root audio 116, 2 Oct 4 18:15 pcmC0D0p crw-rw---T+ 1 root audio 116, 6 Oct 4 17:28 pcmC1D3p crw-rw---T+ 1 root audio 116, 1 Oct 4 17:28 seq crw-rw---T+ 1 root audio 116, 33 Oct 4 17: timer
are your user id belong "audio" group?
drwxr-xr-x 2 root root 80 Oct 4 17:28 by-path
crw-rw---T+ 1 root audio 116, 5 Oct 4 17:28 controlC0
crw-rw---T+ 1 root audio 116, 8 Oct 4 17:28 controlC1
crw-rw---T+ 1 root audio 116, 4 Oct 4 17:28 hwC0D0
crw-rw---T+ 1 root audio 116, 7 Oct 4 17:28 hwC1D0
crw-rw---T+ 1 root audio 116, 3 Oct 4 17:28 pcmC0D0c
crw-rw---T+ 1 root audio 116, 2 Oct 4 18:15 pcmC0D0p
crw-rw---T+ 1 root audio 116, 6 Oct 4 17:28 pcmC1D3p
crw-rw---T+ 1 root audio 116, 1 Oct 4 17:28 seq
crw-rw---T+ 1 root audio 116, 33 Oct 4 17: timer