$ mplayer /usr/share/firefox/res/samples/test.wav
MPlayer 2:0.99+1.0pre8-0ubuntu8 (C) 2000-2006 MPlayer Team
CPU: AMD Sempron(tm)   2500+ (Family: 6, Model: 8, Stepping: 1)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled with runtime CPU detection.


Failed to open /dev/rtc: Permission denied (it should be readable by the user.)
Opening joystick device /dev/input/js0
Can't open joystick device /dev/input/js0: No such file or directory
Can't init input joystick
Setting up LIRC support...
mplayer: could not connect to socket
mplayer: Connection refused
Failed to open LIRC support.
You will not be able to use your remote control.

Playing /usr/share/firefox/res/samples/test.wav.
Audio file file format detected.
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 22050 Hz, 1 ch, u8, 176.4 kbit/100.00% (ratio: 22050->22050)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
alsa-init: using device default
alsa-lib: confmisc.c:670:(snd_func_card_driver) cannot find card '0'
alsa-lib: conf.c:3479:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device
alsa-lib: confmisc.c:391:(snd_func_concat) error evaluating strings
alsa-lib: conf.c:3479:(_snd_config_evaluate) function snd_func_concat returned error: No such device
alsa-lib: confmisc.c:1070:(snd_func_refer) error evaluating name
alsa-lib: conf.c:3479:(_snd_config_evaluate) function snd_func_refer returned error: No such device
alsa-lib: conf.c:3947:(snd_config_expand) Evaluate error: No such device
alsa-lib: pcm.c:2146:(snd_pcm_open_noupdate) Unknown PCM default
alsa-init: playback open error: No such device
[AO OSS] audio_setup: Can't open audio device /dev/dsp: Permission denied
alsa-init: using device default
alsa-lib: confmisc.c:670:(snd_func_card_driver) cannot find card '0'
alsa-lib: conf.c:3479:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device
alsa-lib: confmisc.c:391:(snd_func_concat) error evaluating strings
alsa-lib: conf.c:3479:(_snd_config_evaluate) function snd_func_concat returned error: No such device
alsa-lib: confmisc.c:1070:(snd_func_refer) error evaluating name
alsa-lib: conf.c:3479:(_snd_config_evaluate) function snd_func_refer returned error: No such device
alsa-lib: conf.c:3947:(snd_config_expand) Evaluate error: No such device
alsa-lib: pcm.c:2146:(snd_pcm_open_noupdate) Unknown PCM default
alsa-init: playback open error: No such device
[AO ARTS] loading the aRts backend "/usr/lib/libartscbackend.la" failed
ALSA lib confmisc.c:670:(snd_func_card_driver) cannot find card '0'
ALSA lib conf.c:3479:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device
ALSA lib confmisc.c:391:(snd_func_concat) error evaluating strings
ALSA lib conf.c:3479:(_snd_config_evaluate) function snd_func_concat returned error: No such device
ALSA lib confmisc.c:1070:(snd_func_refer) error evaluating name
ALSA lib conf.c:3479:(_snd_config_evaluate) function snd_func_refer returned error: No such device
ALSA lib conf.c:3947:(snd_config_expand) Evaluate error: No such device
ALSA lib pcm.c:2146:(snd_pcm_open_noupdate) Unknown PCM default
[AO ESD] esd_open_sound failed: Connection reset by peer
ao_nas: init(): Can't open nas audio server -> nosound
[AO SDL] Samplerate: 22050Hz Channels: Mono Format u8
alsa-lib: confmisc.c:670:(snd_func_card_driver) cannot find card '0'
alsa-lib: conf.c:3479:(_snd_config_evaluate) function snd_func_card_driver returned error: No such device
alsa-lib: confmisc.c:391:(snd_func_concat) error evaluating strings
alsa-lib: conf.c:3479:(_snd_config_evaluate) function snd_func_concat returned error: No such device
alsa-lib: confmisc.c:1070:(snd_func_refer) error evaluating name
alsa-lib: conf.c:3479:(_snd_config_evaluate) function snd_func_refer returned error: No such device
alsa-lib: conf.c:3947:(snd_config_expand) Evaluate error: No such device
alsa-lib: pcm.c:2146:(snd_pcm_open_noupdate) Unknown PCM default
[AO SDL] Unable to open audio: No available audio device
AO: [null] 22050Hz 1ch u8 (1 bytes per sample)
Video: no video
Starting playback...
A:  -0.0 (unknown) of 1.0 (01.0)  0.0% 

Exiting... (End of file)