Sound lost after reinstall

[Brian Astill]

I'm using Dapper on a Dell Dimension 8100 which I think means that 
sound is digital rather than analogue and I need a software 
switch to access it.
The outputs below mean little to me, but might help someone to 
help me  :-)

root at dapper2:/# cat  /proc/asound/cards
0 [Live           ]: EMU10K1 - SBLive! Value [CT4780]
                     SBLive! Value [CT4780] (rev.8, 
serial:0x80221102) at 0xecc0, irq 11

root at dapper2:/#  lsmod | grep  snd
snd_emu10k1_synth       7296  0
snd_emux_synth         37376  1 snd_emu10k1_synth
snd_seq_virmidi         7680  1 snd_emux_synth
snd_seq_midi_emul       7168  1 snd_emux_synth
snd_seq_dummy           3844  0
snd_seq_oss            33536  0
snd_seq_midi            9376  0
snd_seq_midi_event      7552  3 
snd_seq_virmidi,snd_seq_oss,snd_seq_midi
snd_seq                51984  9 
snd_emux_synth,snd_seq_virmidi,snd_seq_midi_emul,snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_emu10k1           117284  3 snd_emu10k1_synth
snd_rawmidi            25504  3 
snd_seq_virmidi,snd_seq_midi,snd_emu10k1
snd_ac97_codec         93216  1 snd_emu10k1
snd_ac97_bus            2304  1 snd_ac97_codec
snd_pcm_oss            53664  0
snd_mixer_oss          18688  1 snd_pcm_oss
snd_pcm                89864  3 
snd_emu10k1,snd_ac97_codec,snd_pcm_oss
snd_seq_device          8716  8 
snd_emu10k1_synth,snd_emux_synth,snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq,snd_emu10k1,snd_rawmidi
snd_timer              25220  3 snd_seq,snd_emu10k1,snd_pcm
snd_page_alloc         10632  2 snd_emu10k1,snd_pcm
snd_util_mem            4608  2 snd_emux_synth,snd_emu10k1
snd_hwdep               9376  2 snd_emux_synth,snd_emu10k1
snd                    55268  17 
snd_emux_synth,snd_seq_virmidi,snd_seq_oss,snd_seq,snd_emu10k1,snd_rawmidi,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_device,snd_timer,snd_hwdep
soundcore              10208  1 snd

root at dapper2:/# lspci -v | grep -i audio
0000:02:0a.0 Multimedia audio controller: Creative Labs SB Live! 
EMU10k1 (rev 08)

-- 
Regards,
Brian