Something

bedazzled@bedazzled ~ $ ls -l /dev/mixer
ls: /dev/mixer: No such file or directory
bedazzled@bedazzled ~ $ ls -l /dev/sound/mixer
ls: /dev/sound/mixer: No such file or directory
bedazzled@bedazzled ~ $ find /dev -iname '*mixer*'
/dev/mixer3
/dev/mixer2
/dev/mixer1