callisto ~ # cat /proc/asound/devices
  0: [ 0]   : control
  1:        : sequencer
 16: [ 0- 0]: digital audio playback
 20: [ 0- 4]: digital audio playback
 24: [ 0- 0]: digital audio capture
 25: [ 0- 1]: digital audio capture
 26: [ 0- 2]: digital audio capture
 27: [ 0- 3]: digital audio capture
 33:        : timer


callisto ~ # cat /proc/asound/pcm
00-04: Intel ICH - IEC958 : Intel ICH7 - IEC958 : playback 1
00-03: Intel ICH - ADC2 : Intel ICH7 - ADC2 : capture 1
00-02: Intel ICH - MIC2 ADC : Intel ICH7 - MIC2 ADC : capture 1
00-01: Intel ICH - MIC ADC : Intel ICH7 - MIC ADC : capture 1
00-00: Intel ICH : Intel ICH7 : playback 1 : capture 1