No, it just means that you have (probably digital) sound output enabled. If you have some sound outputs, such as digital (optical/coaxial) or hdmi you are not using, then you can blacklist their drivers and you might save some battery. They will be listed in lsmod something like, snd_hda_code_realtek and snd_hda_codec_hdmi. By adding these to /etc/modprobe.d/blacklist.conf you can disable them.