Audio Output: Optical/Coax
Speaker Config: 5.1
Boost Volume level on Downmix: True
Dolby Digital (AC#) capable receiver: True
DTS capable receiver: True
Audio Output Device: Custom
Custom Audio Device: plughw:1,3
Passthrough Output Device: Custom
Custom Passthrough Device: plughw:1,3

ssheikh@XBMC-MCE:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC888 Analog [ALC888 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: ALC888 Digital [ALC888 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0