Linux Orbit has posted a howto on installing and configuring ALSA Sound Modules in Debian GNU/Linux

If you're like a lot of the users on the Linux Orbit IRC support channel (irc.openprojects.net #linuxorbit), a very common question that comes up when trying Debian GNU/Linux is how the heck do you get Advanced Linux Sound Architecture (a.k.a. ALSA) sound modules set up properly? In this HOWTO we'll show you how to compile and install the ALSA kernel modules, and then setup things using the ALSA Debian script so that modules are automatically loaded and unloaded, and your mixer levels are saved and restored on boot up.

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