gavin@lappy486:~$ lsusb
Bus 003 Device 001: ID 0000:0000  
Bus 002 Device 001: ID 0000:0000  
Bus 001 Device 003: ID 046d:0a02 Logitech, Inc. 
Bus 001 Device 001: ID 0000:0000  
gavin@lappy486:~$ cat /proc/asound/cards
 0 [SB             ]: HDA-Intel - HDA ATI SB
                      HDA ATI SB at 0xd0400000 irq 19
gavin@lappy486:~$ cat /proc/asound/devices
  0: [ 0]   : control
  1:        : sequencer
 16: [ 0- 0]: digital audio playback
 22: [ 0- 6]: digital audio playback
 24: [ 0- 0]: digital audio capture
 30: [ 0- 6]: digital audio capture
 33:        : timer