I searched for the ALSA 0.9 drivers with google's language tools for pages written in Bulgarian and it gave me this page: http://linux-bg.exco.net/cgi-bin/y/i...page=faq&key=3
I am unable to read Bulgarian, but I hope it can be of some help. It that doesn't work, I'd suggest using the language tools for google or yahoo and set it to look for pages written in Bulgarian. My google is set to English though. I'm sure there are more translation options for you if you go to the bulgarian google at http://www.google.com/intl/bg/
and try those language tools. Good luck.
Edit: I've also tried to find a good ALSA page in english and tried to translate it online in to Bulgarian, but none of the language tools I can find translate into Bulgarian. Maybe the Google for Bulgarian users has that option? If so, have it translate this page for you: http://www.suse.de/~mana/alsa090_howto.html
I just hope it's understandable and doesn't lose much in the translation.