Hi Deepak,
Try the following link.
This may help you.
http://goinggnu.wordpress.com/2007/07/31/how-to-set-up-surround-51-audio-in-linux-with-alsa/
Dont ask two irrelevant questions in a single thread.
Here is the list of 80 of the Best Linux Security Applications
http://www.linuxlinks.com/article/20080429140249467/Security.html
You can mix those tools and get an alternate to Belarc Auditor.
I like BackTrack linux.
http://www.backtrack-linux.org/
You can download it and try.
If you tried something, feel free to share your experiences here.
That will be very useful for all of us.
--
Regards,
T.Shrinivasan
My experiences with Linux are here
http://goinggnu.wordpress.com
For Free and Open Source Jobs
http://fossjobs.wordpress.com