No sound on Sony UX380n

[Hector Scaramelli <pwrpnt@wpowerpoint.com>]

Hi people,

I,ve wiped Vista and installed SID, with Fluxbox and gdm. Also smplayer 
and gmplayer.
The output of lsmod:
snd_hda_intel         324248  0
button                  6096  0
snd_pcm                62596  1 snd_hda_intel
snd_seq                41456  0
snd_timer              17800  2 snd_pcm,snd_seq
snd_seq_device          6380  1 snd_seq
usbhid                 35904  0
hid                    33184  1 usbhid
snd                    45604  5 
snd_hda_intel,snd_pcm,snd_seq,snd_timer,snd_seq_device

The output of lspci:
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High 
Definition Audio Controller (rev 02)

I've run alsaconf which shows the model (alsa utils is 1.0.16) of the 
card and load the module but still no output, mplayer seems to be 
running fine but I got no sound.
What am I missing? or doing wrong?

Thanks In Advance
Hector