How to upgrade ALSA in Ubuntu 9.04 to 1.0.20

I was having issues with Skype the other day . Somehow my mic was not working. I read several howto’s and played with several options, but nothing seemed to work. But  I found another way to fix it. It meant that I needed to upgrade my ALSA from the current version (1.0.18rc3) to 1.0.20. I used this blog to do it.

-Eric