diablo@laptop:~$ aplay -L
default:CARD=SB
    HDA ATI SB
    Default Audio Device
front:CARD=SB
    HDA ATI SB
    Front speakers
surround40:CARD=SB
    HDA ATI SB
    4.0 Surround output to Front and Rear speakers
surround41:CARD=SB
    HDA ATI SB
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=SB
    HDA ATI SB
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=SB
    HDA ATI SB
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=SB
    HDA ATI SB
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=SB
    HDA ATI SB
    IEC958 (S/PDIF) Digital Audio Output
null
    Discard all samples (playback) or generate zero samples (capture)
diablo@laptop:~$