[mythtv@mythbox .mythtv]$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: CMI8738MC8 [C-Media PCI CMI8738-MC8], device 0: CMI8738-MC8 [C-Media PCI DAC/ADC]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: CMI8738MC8 [C-Media PCI CMI8738-MC8], device 1: CMI8738-MC8 [C-Media PCI 2nd DAC]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: CMI8738MC8 [C-Media PCI CMI8738-MC8], device 2: CMI8738-MC8 [C-Media PCI IEC958]
  Subdevices: 0/1
  Subdevice #0: subdevice #0