These modules allow you to choose the way the sound will be output to your audio system .
default: enabled on GNU/Linux
For GNU/Linux and Unix only
This is the audio output for OSS (Open Sound System) output (/dev/dsp, for example, under Linux). It requires that your kernel was compiled with support for your sound card, or, if you use ALSA (Advanced Linux Sound System), the OSS emulation layer must be active.
default: disabled
For GNU/Linux only
This is the sound output for ALSA (Advanced Linux Sound Architecture). It only works under Linux, and it requires that you installed the ALSA drivers and libraries.
default: disabled
For GNU/Linux & Unix only
This sound output has ESD (Enlightened Sound Daemon) support (usually used with Gnome). You must have the daemon and its libraries installed.
default: disabled
For GNU/Linux & Unix only
This sound output has aRts (KDE's sound server) support. You must have the daemon and its libraries installed .
default: enabled on win
For Windows only
This is the Wave output, which is used by the win32 port.