No sound-ALSA modules problem

[luster]

So today, on my Basics of Linux use lecture I hear: use sudo only if you know what you are doing. Well... to late for sorry
I uninstalled PulseAudio and tried to revert to ALSA (Matlab needs it)..but in the proces i did lots of stupid stuff.
I think this can help to inform you : http://www.alsa-project.org/db/?f=8d179c0ea05337226e641f7ce116b40d5b01ce7d
Thank you.