Binary package “alsa-source” in ubuntu trusty

ALSA driver sources

 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.