diff --git a/source/SoundTouch/3dnow_win.cpp b/source/SoundTouch/3dnow_win.cpp
index aa3a644..15c841a 100644
--- a/source/SoundTouch/3dnow_win.cpp
+++ b/source/SoundTouch/3dnow_win.cpp
@@ -24,7 +24,7 @@
 /// NOTICE: If using Visual Studio 6.0, you'll need to install the "Visual C++ 
 /// 6.0 processor pack" update to support 3DNow! instruction set. The update is 
 /// available for download at Microsoft Developers Network, see here:
-/// http://msdn.microsoft.com/vstudio/downloads/tools/ppack/default.aspx
+/// http://msdn.microsoft.com/en-us/vstudio/aa718349.aspx
 ///
 /// If the above URL is expired or removed, go to "http://msdn.microsoft.com" and 
 /// perform a search with keywords "processor pack".
diff --git a/source/SoundTouch/mmx_optimized.cpp b/source/SoundTouch/mmx_optimized.cpp
index 8096593..70a9aad 100644
--- a/source/SoundTouch/mmx_optimized.cpp
+++ b/source/SoundTouch/mmx_optimized.cpp
@@ -12,7 +12,7 @@
 /// NOTICE: If using Visual Studio 6.0, you'll need to install the "Visual C++ 
 /// 6.0 processor pack" update to support compiler intrinsic syntax. The update
 /// is available for download at Microsoft Developers Network, see here:
-/// http://msdn.microsoft.com/vstudio/downloads/tools/ppack/default.aspx
+/// http://msdn.microsoft.com/en-us/vstudio/aa718349.aspx
 ///
 /// Author        : Copyright (c) Olli Parviainen
 /// Author e-mail : oparviai 'at' iki.fi
diff --git a/source/SoundTouch/sse_optimized.cpp b/source/SoundTouch/sse_optimized.cpp
index bed4834..db6bb13 100644
--- a/source/SoundTouch/sse_optimized.cpp
+++ b/source/SoundTouch/sse_optimized.cpp
@@ -12,7 +12,7 @@
 /// NOTICE: If using Visual Studio 6.0, you'll need to install the "Visual C++ 
 /// 6.0 processor pack" update to support SSE instruction set. The update is 
 /// available for download at Microsoft Developers Network, see here:
-/// http://msdn.microsoft.com/vstudio/downloads/tools/ppack/default.aspx
+/// http://msdn.microsoft.com/en-us/vstudio/aa718349.aspx
 ///
 /// If the above URL is expired or removed, go to "http://msdn.microsoft.com" and 
 /// perform a search with keywords "processor pack".