} else {
/* Stereo output */
if((err = snd_mixer_selem_set_playback_volume
(alsa_mixer_elem, alsa_mixer_left, from_percent(*left)))
|| (err = snd_mixer_selem_set_playback_volume
(alsa_mixer_elem, alsa_mixer_right, from_percent(*right))))
} else {
/* Stereo output */
if((err = snd_mixer_selem_set_playback_volume
(alsa_mixer_elem, alsa_mixer_left, from_percent(*left)))
|| (err = snd_mixer_selem_set_playback_volume
(alsa_mixer_elem, alsa_mixer_right, from_percent(*right))))