root@deb:~# cat /dev/urandom | aplay
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 return                                           ed 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 er                                           ror: 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 err                                           or: 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
aplay: main:547: audio open error: No such device
root@deb:~# cat /dev/urandom | aplay
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 return                                           ed 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 er                                           ror: 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 err                                           or: 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
aplay: main:547: audio open error: No such device