**** List of PLAYBACK Hardware Devices ****
card 1: S51 [SB Omni Surround 5.1], device 0: USB Audio [USB Audio]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 1: S51 [SB Omni Surround 5.1], device 1: USB Audio [USB Audio #1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: S51 [SB Omni Surround 5.1], device 2: USB Audio [USB Audio #2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0