ok so when i had finished my fresh install of backtrack 5 the sound worked ok out of the box funnily enough since it still never detected my sound card. only problem was i couldn't adjust the volume... so i did the pulseaudio fix described here and installed some other packages etc.
and now its not working fullstop and i just cant figure it out.

and i don't want to do a reinstall after all the time i have spent updating my system.

this what my soundcard comes up as with the
00:1e.2 Multimedia audio controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 04)
aplay -l
aplay: device_list:223: no soundcards found...