aplay -L
default
    Playback/recording through the PulseAudio sound server
hdmi:CARD=HDMI,DEV=0
    HDA ATI HDMI, HDMI 0
    HDMI Audio Output
dmix:CARD=HDMI,DEV=3
    HDA ATI HDMI, HDMI 0
    Direct sample mixing device
dsnoop:CARD=HDMI,DEV=3
    HDA ATI HDMI, HDMI 0
    Direct sample snooping device
hw:CARD=HDMI,DEV=3
    HDA ATI HDMI, HDMI 0
    Direct hardware device without any conversions
plughw:CARD=HDMI,DEV=3
    HDA ATI HDMI, HDMI 0
    Hardware device with all software conversions
sysdefault:CARD=Generic
    HD-Audio Generic, ALC887-VD Analog
    Default Audio Device
front:CARD=Generic,DEV=0
    HD-Audio Generic, ALC887-VD Analog
    Front speakers
surround40:CARD=Generic,DEV=0
    HD-Audio Generic, ALC887-VD Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Generic,DEV=0
    HD-Audio Generic, ALC887-VD Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Generic,DEV=0
    HD-Audio Generic, ALC887-VD Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Generic,DEV=0
    HD-Audio Generic, ALC887-VD Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Generic,DEV=0
    HD-Audio Generic, ALC887-VD Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
hdmi:CARD=Generic,DEV=0
    HD-Audio Generic, ALC887-VD Digital
    HDMI Audio Output
dmix:CARD=Generic,DEV=0
    HD-Audio Generic, ALC887-VD Analog
    Direct sample mixing device
dmix:CARD=Generic,DEV=3
    HD-Audio Generic, ALC887-VD Digital
    Direct sample mixing device
dsnoop:CARD=Generic,DEV=0
    HD-Audio Generic, ALC887-VD Analog
    Direct sample snooping device
dsnoop:CARD=Generic,DEV=3
    HD-Audio Generic, ALC887-VD Digital
    Direct sample snooping device
hw:CARD=Generic,DEV=0
    HD-Audio Generic, ALC887-VD Analog
    Direct hardware device without any conversions
hw:CARD=Generic,DEV=3
    HD-Audio Generic, ALC887-VD Digital
    Direct hardware device without any conversions
plughw:CARD=Generic,DEV=0
    HD-Audio Generic, ALC887-VD Analog
    Hardware device with all software conversions
plughw:CARD=Generic,DEV=3
    HD-Audio Generic, ALC887-VD Digital
    Hardware device with all software conversions