mercurial svn app is also called hg; mercurial app can be installed using your package manager automake package must be installed; remove alsa packages before installing hg install kernel source and kernel headers for your kernel; uname -r for kernel versionfor ubuntu: apt-get install build-essential installs kernel sourcesubuntu build alsa sources: sudo apt-get install build-essential linux-headers-`uname -r` libncurses5-dev automake autoconfuse 'hg clone' command to download the alsa cvs source files at http://alsa-project.org/download.php at the hg repository link on this page; these are the files you need to download: alsa-drivers, alsa-kernel, alsa-libs, alsa-utilshttp://hg-mirror.alsa-project.org/ ;read the entire page tooalsa driver needs alsa kernel to compile: 'hg clone http://hg-mirror.alsa-project.org/alsa-kernel alsa-kernel'use ./hgcompile on all the alsa sources and not ./configure