diff --git a/LameXP_VS2013.vcxproj b/LameXP_VS2013.vcxproj
index d0d59a2a..dae5abd6 100644
--- a/LameXP_VS2013.vcxproj
+++ b/LameXP_VS2013.vcxproj
@@ -233,7 +233,7 @@ copy /Y "$(SolutionDir)\..\Prerequisites\Qt4\MSVC-2013\Shared\plugins\imageforma
     </ClCompile>
     <Link>
       <AdditionalOptions>"/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='*' processorArchitecture='*'" %(AdditionalOptions)</AdditionalOptions>
-      <AdditionalDependencies>QtCore.lib;QtGui.lib;QtSvg.lib;qtmain.lib;qsvg.lib;qico.lib;qtga.lib;Winmm.lib;imm32.lib;ws2_32.lib;Shlwapi.lib;Sensapi.lib;PowrProf.lib;psapi.lib;Version.lib;EncodePointer.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>QtCore.lib;QtGui.lib;QtSvg.lib;qsvg.lib;qico.lib;qtga.lib;Winmm.lib;imm32.lib;ws2_32.lib;Shlwapi.lib;Sensapi.lib;PowrProf.lib;psapi.lib;Version.lib;EncodePointer.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <ShowProgress>LinkVerboseLib</ShowProgress>
       <AdditionalLibraryDirectories>$(SolutionDir)\..\Prerequisites\Qt4\MSVC-2013\Static\lib;$(SolutionDir)\..\Prerequisites\Qt4\MSVC-2013\Static\plugins\imageformats;$(SolutionDir)\..\Prerequisites\EncodePointer\lib;$(SolutionDir)\..\Prerequisites\VisualLeakDetector\lib\Win32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <IgnoreSpecificDefaultLibraries>%(IgnoreSpecificDefaultLibraries)</IgnoreSpecificDefaultLibraries>
diff --git a/doc/Changelog.html b/doc/Changelog.html
index 8443303d..4ff29693 100644
--- a/doc/Changelog.html
+++ b/doc/Changelog.html
@@ -95,6 +95,7 @@ document.write('<a h'+'ref'+'="ma'+'ilto'+':'+e+'">'+e+'<\/'+'a'+'>');
 <li>Added enhanced file renaming option: Files can now be renamed via the <a href="http://www.regular-expressions.info/quickstart.html">regular expression</a> engine<br /></li>
 <li>Added capability to select <em>multiple</em> files on &quot;Source Files&quot; tab<br /></li>
 <li>Updated MediaInfo to v0.7.74 (2015-05-25), compiled with ICL 15.0 and MSVC 12.0<br /></li>
+<li>Updated mpg123 decoder to v1.22.2 (2015-05-24), compiled with GCC 5.1.0<br /></li>
 <li>Updated ALAC decoder to refalac v1.47 (2015-02-15), based on reference implementation by Apple<br /></li>
 <li>Updated GnuPG to v1.4.19 (2015-02-27), compiled with GCC 4.9.2<br /></li>
 <li>Fixed potential deadlock in Cue Sheet import dialog when &quot;Browse...&quot; button is clicked<br /></li>
diff --git a/doc/Changelog.md b/doc/Changelog.md
index 8979e763..d825c41d 100644
--- a/doc/Changelog.md
+++ b/doc/Changelog.md
@@ -12,6 +12,7 @@
 * Added enhanced file renaming option: Files can now be renamed via the [regular expression](http://www.regular-expressions.info/quickstart.html) engine
 * Added capability to select *multiple* files on "Source Files" tab
 * Updated MediaInfo to v0.7.74 (2015-05-25), compiled with ICL 15.0 and MSVC 12.0
+* Updated mpg123 decoder to v1.22.2 (2015-05-24), compiled with GCC 5.1.0
 * Updated ALAC decoder to refalac v1.47 (2015-02-15), based on reference implementation by Apple
 * Updated GnuPG to v1.4.19 (2015-02-27), compiled with GCC 4.9.2
 * Fixed potential deadlock in Cue Sheet import dialog when "Browse..." button is clicked
diff --git a/res/tools/mpg123.exe b/res/tools/mpg123.exe
index ab4203bb..cb10d310 100644
Binary files a/res/tools/mpg123.exe and b/res/tools/mpg123.exe differ
diff --git a/src/Config.h b/src/Config.h
index b450e18b..579db090 100644
--- a/src/Config.h
+++ b/src/Config.h
@@ -33,9 +33,9 @@
 #define VER_LAMEXP_MAJOR					4
 #define VER_LAMEXP_MINOR_HI					1
 #define VER_LAMEXP_MINOR_LO					2
-#define VER_LAMEXP_TYPE						Alpha
-#define VER_LAMEXP_PATCH					9
-#define VER_LAMEXP_BUILD					1763
+#define VER_LAMEXP_TYPE						Beta
+#define VER_LAMEXP_PATCH					1
+#define VER_LAMEXP_BUILD					1768
 #define VER_LAMEXP_CONFG					1700
 
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/src/Tools.h b/src/Tools.h
index 38e5583e..810ec645 100644
--- a/src/Tools.h
+++ b/src/Tools.h
@@ -74,7 +74,7 @@ g_lamexp_tools[] =
 	{"a503572a9fd5e75acfd5e70c8b6618db3076b3a865b9aea34443fccb6c363705b0c392e7fbfd50ba5cbf09b20f4d467a", CPU_TYPE_X86_ALL, "mediainfo.i386.exe", 774, ""},
 	{"e25caa6e199a3f5d86b9b2fb5e4bcd369fa67b13b1afad982196b44ae323f55e8729b76a3ad83f97c2575342ac57a013", CPU_TYPE_X64_ALL, "mediainfo.x64.exe",  774, ""},
 	{"7e6346a057634ff07b2e1f427035324f7f02100cc996425990f87f71d767fce4c7b101588c7d944ba49cb2d7e51c9bdb", CPU_TYPE_ALL_ALL, "mpcdec.exe", 475, ""},
-	{"35bc1844a5aaeb5d70df2227d3c419a743feea336c4f6cbd8d25a777945c7e138d9984f1c6df5c94becff654e2728976", CPU_TYPE_ALL_ALL, "mpg123.exe", 1220, ""},
+	{"bef99ee932b6da589e502082969285e22e3be03263b75bce7780e31f38e3ec16fad90957157bfd8d39b95aab51be3914", CPU_TYPE_ALL_ALL, "mpg123.exe", 1222, ""},
 	{"f1f2ea5c9e5539620b706e7af68e543bf7a731afb06ccce3815ab34dad64d697e4d6ffcd187a396619b8b52efe7edf88", CPU_TYPE_ALL_ALL, "oggdec.exe", 1101, ""},
 	{"2b85af4919cb8292d6839271109688bb4808d3e2bc6604d9d02cca6b5f2df8d3c0808a3876a4cd75ae973a3b5562beec", CPU_TYPE_X86_GEN, "oggenc2.i386.exe", 287134603, "2014"},
 	{"969797f883a41661785f32bc194ca1b91e8e215e69e9d7cf04cbbdf9097719841ac6c449c9b929e310f7eb2905196978", CPU_TYPE_X86_SSE, "oggenc2.sse2.exe", 287134603, "2014"},