I wasn't able to get any sound at all from the
LFE/center jack on SB Live! 5.1 model SB0100. Model
SB0060 works just fine with the same driver/tools. I
tried 0.18, 0.20 and CVS versions, all with the same
ALSA is able to feed some sound to the subwoofer, so I
suspect this is an issue with your driver. Any ideas?