Initial commit

added libraries:
opus
flac
libsndfile

updated:
libvorbis
libogg
openal

- Everything works as expected for now. Bare in mind libsndfile needed the check for whether or not it could find the xiph libraries removed in order for this to work.

Engine/lib/libsndfile/Win32/README-precompiled-dll.txt

@@ -0,0 +1,40 @@
+Notes on Using the Pre-compiled libsndfile DLL.
+===============================================
+
+In order to use this pre-compiled DLL with Visual Studio, you will need to
+generate a .LIB file from the DLL.
+
+This can be achieved as follows:
+
+  1) In a CMD window, change to the directory containing this file and
+     run the command:
+
+          lib /machine:i386 /def:libsndfile-1.def
+
+You now have two files:
+
+        libsndfile-1.dll
+        libsndfile-1.lib
+
+to be used with VisualStudio.
+
+If the lib command fails with a command saying "'lib' is not recognized as
+an internal or external command, operable program or batch file", you need
+to find the location of "lib.exe" and add that directory to your PATH
+environment variable. Another alternative is to use the "Visual Studio 2005
+Command Prompt" Start menu item:
+
+   Start ->
+   		All Programs ->
+			Visual Studio 2005 ->
+				Visual Studio Tools ->
+					Visual Studio 2005 Command Prompt
+
+If for some reason these instructions don't work for you or you are still
+not able to use the libsndfile DLL with you project, please do not contact
+the main author of libsndfile. Instead, join the libsndfile-users mailing
+list :
+
+        http://www.mega-nerd.com/libsndfile/lists.html
+
+and ask a question there.

Engine/lib/libsndfile/Win32/testprog.c

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+/*	Simple test program to make sure that Win32 linking to libsndfile is
+**	working.
+*/
+
+#include <stdio.h>
+
+#include "sndfile.h"
+
+int
+main (void)
+{	static char strbuffer [256] ;
+	sf_command (NULL, SFC_GET_LIB_VERSION, strbuffer, sizeof (strbuffer)) ;
+	puts (strbuffer) ;
+	return 0 ;
+}
+