Here is the output when I type "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