mplayer won't play audio CD

[Rodolfo Medina <rodolfo.medina@gmail.com>]

Please help...  mplayer works fine when playing files (mp3, wav, etc), but
fails in playing audio CDs.  When I launch it as a normal user I have:

$ mplayer cdda://
MPlayer 1.3.0 (Debian), built with gcc-6.3.0 (C) 2000-2016 MPlayer Team
do_connect: could not connect to socket
connect: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing cdda://.
Found audio CD with 12 tracks.
libavformat version 57.56.101 (external)

Track 1


Exiting... (End of file)


and, as root,


# mplayer cdda://
MPlayer 1.3.0 (Debian), built with gcc-6.3.0 (C) 2000-2016 MPlayer Team
do_connect: could not connect to socket
connect: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing cdda://.
Found audio CD with 12 tracks.
rawaudio file format detected.

Track 1
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 44100 Hz, 2 ch, s16le, 1411.2 kbit/100.00% (ratio: 176400->176400)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
XDG_RUNTIME_DIR (/run/user/1000) is not owned by us (uid 0), but by uid 1000! (This could e g happen if you try to connect to a non-root PulseAudio as a root user, over the native protocol. Don't do that.)
AO: [pulse] Init failed: Connection refused
Failed to initialize audio driver 'pulse'
XDG_RUNTIME_DIR (/run/user/1000) is not owned by us (uid 0), but by uid 1000! (This could e g happen if you try to connect to a non-root PulseAudio as a root user, over the native protocol. Don't do that.)
[AO_ALSA] alsa-lib: pcm_hw.c:1602:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-2): No such file or directory
[AO_ALSA] alsa-lib: pcm_dmix.c:1052:(snd_pcm_dmix_open) unable to open slave
[AO_ALSA] Playback open error: No such file or directory
Failed to initialize audio driver 'alsa'
[AO SDL] Samplerate: 44100Hz Channels: Stereo Format s16le
[AO SDL] using aalib audio driver.
[AO SDL] Unable to open audio: No available audio device
Failed to initialize audio driver 'sdl:aalib'
Could not open/initialize audio device -> no sound.
Audio: no sound
Video: no video


Exiting... (End of file)


In Google I couldn't find a solution...

Thanks in advance for any help.

Rodolfo