aplay -L

aplayl (text/plain), 833 bytes, created by Peter Basista on 2009-05-16 00:15:02 UTC

default:CARD=NVidia
    HDA NVidia, ALC861 Analog
    Default Audio Device
front:CARD=NVidia,DEV=0
    HDA NVidia, ALC861 Analog
    Front speakers
surround40:CARD=NVidia,DEV=0
    HDA NVidia, ALC861 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=NVidia,DEV=0
    HDA NVidia, ALC861 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=NVidia,DEV=0
    HDA NVidia, ALC861 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=NVidia,DEV=0
    HDA NVidia, ALC861 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=NVidia,DEV=0
    HDA NVidia, ALC861 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
null
    Discard all samples (playback) or generate zero samples (capture)