alsa-source 1.0.25+dfsg-0ubuntu3 (amd64 binary) in ubuntu quantal

 This package contains the source code for the ALSA drivers.
 The source code can be compiled into an alsa-modules package
 using the m-a utility (available in the module-assistant
 package). Please note that the kernel headers must be
 installed to compile these modules. Please read the
 README.Debian file for more information about loading and
 building modules.
 .
 ALSA is the Advanced Linux Sound Architecture.