diff --git a/doc/Changelog.html b/doc/Changelog.html
index 900b0384..4680de9a 100644
--- a/doc/Changelog.html
+++ b/doc/Changelog.html
@@ -84,9 +84,10 @@
 <h1 id="lamexp-v4.xx-history"><span class="header-section-number">1</span> LameXP v4.xx History</h1>
 <h2 id="lamexp-v4.14-2016--" class="unnumbered">LameXP v4.14 [2016-??-??]</h2>
 <ul>
+<li>Upgraded build environment to Microsoft Visual Studio 2015 with Update-2</li>
 <li>Fixed the location of temporary intermediate files for SoX-based audio effects</li>
 <li>Enabled the &quot;built-in&quot; resampler for QAAC encoder</li>
-<li>The &quot;Algorithm Quality&quot; slider now also effects the QAAC encoder</li>
+<li>The &quot;Algorithm Quality&quot; slider now also affects the QAAC encoder</li>
 <li>Added &quot;AVX&quot; (Advanced Vector Extensions) to CPU feature detection code</li>
 <li>Updated Opus encoder/decoder libraries to v1.1.2 and Opus-Tools to v0.1.9 (2016-01-12)</li>
 <li>Updated LAME encoder to v3.100 Alpha-2 (2016-01-29), compiled with ICL 15.0 and MSVC 12.0</li>
diff --git a/doc/Changelog.md b/doc/Changelog.md
index 3577846e..bf8d6a41 100644
--- a/doc/Changelog.md
+++ b/doc/Changelog.md
@@ -4,6 +4,7 @@
 
 ## LameXP v4.14 [2016-??-??] ## {-}
 
+* Upgraded build environment to Microsoft Visual Studio 2015 with Update-2
 * Fixed the location of temporary intermediate files for SoX-based audio effects
 * Enabled the "built-in" resampler for QAAC encoder
 * The "Algorithm Quality" slider now also affects the QAAC encoder
diff --git a/doc/Manual.html b/doc/Manual.html
index 22d125e2..4a0c9d53 100644
--- a/doc/Manual.html
+++ b/doc/Manual.html
@@ -45,7 +45,7 @@ document.write('<a h'+'ref'+'="ma'+'ilto'+':'+e+'" clas'+'s="em' + 'ail">'+e+'<\
 <li><a href="#output-formats-encoders"><span class="toc-section-number">1.2</span> Output Formats (Encoders)</a></li>
 <li><a href="#input-formats-decoders"><span class="toc-section-number">1.3</span> Input Formats (Decoders)</a></li>
 </ul></li>
-<li><a href="#leagl-information"><span class="toc-section-number">2</span> Leagl Information</a><ul>
+<li><a href="#legal-information"><span class="toc-section-number">2</span> Legal Information</a><ul>
 <li><a href="#third-party-software"><span class="toc-section-number">2.1</span> Third-party Software</a></li>
 <li><a href="#license-terms"><span class="toc-section-number">2.2</span> License Terms</a></li>
 </ul></li>
@@ -175,7 +175,7 @@ document.write('<a h'+'ref'+'="ma'+'ilto'+':'+e+'" clas'+'s="em' + 'ail">'+e+'<\
 <li>WavPack Hybrid Lossless Audio [built-in]</li>
 <li>Windows Media Audio (WMA), using wma2wav [built-in]</li>
 </ul>
-<h1 id="leagl-information"><span class="header-section-number">2</span> Leagl Information</h1>
+<h1 id="legal-information"><span class="header-section-number">2</span> Legal Information</h1>
 <p>The LameXP software was developed, from the scratch, by LoRd_MuldeR <script type="text/javascript">
 <!--
 h='&#x47;&#x4d;&#88;&#46;&#100;&#x65;&#x25;&#x33;&#x45;';a='&#64;';n='&#x25;&#x33;&#x43;&#x4d;&#x75;&#108;&#100;&#x65;&#82;&#50;';e=n+a+h;
diff --git a/etc/Translation/LameXP_PL.ts b/etc/Translation/LameXP_PL.ts
index 4ef2503c..224b0055 100644
--- a/etc/Translation/LameXP_PL.ts
+++ b/etc/Translation/LameXP_PL.ts
@@ -3231,7 +3231,7 @@
     <message>
         <location filename="../../src/Dialog_Processing.cpp" line="534"/>
         <source>Multi-threading enabled: Running %1 instances in parallel!</source>
-        <translation type="unfinished">Wielowątkowosć włączona: Równolegle wykonywanych jest %1 kodowań!</translation>
+        <translation type="unfinished">Wielowątkowość włączona: Równolegle wykonywanych jest %1 kodowań!</translation>
     </message>
     <message>
         <location filename="../../src/Dialog_Processing.cpp" line="663"/>
diff --git a/res/localization/LameXP_PL.qm b/res/localization/LameXP_PL.qm
index 90976c26..251bcaf3 100644
Binary files a/res/localization/LameXP_PL.qm and b/res/localization/LameXP_PL.qm differ
diff --git a/src/Config.h b/src/Config.h
index e1487fb3..18bbe03a 100644
--- a/src/Config.h
+++ b/src/Config.h
@@ -34,8 +34,8 @@
 #define VER_LAMEXP_MINOR_HI					1
 #define VER_LAMEXP_MINOR_LO					4
 #define VER_LAMEXP_TYPE						Alpha
-#define VER_LAMEXP_PATCH					6
-#define VER_LAMEXP_BUILD					1872
+#define VER_LAMEXP_PATCH					8
+#define VER_LAMEXP_BUILD					1878
 #define VER_LAMEXP_CONFG					1818
 
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/src/Encoder_Abstract.cpp b/src/Encoder_Abstract.cpp
index 47947de3..03c71725 100644
--- a/src/Encoder_Abstract.cpp
+++ b/src/Encoder_Abstract.cpp
@@ -57,7 +57,8 @@ void AbstractEncoder::setRCMode(const int &mode)
 
 void AbstractEncoder::setBitrate(const int &bitrate)
 {
-	if (qMax(0, bitrate) >= toEncoderInfo()->valueCount(m_configRCMode))
+	const int valueCount = toEncoderInfo()->valueCount(m_configRCMode);
+	if ((valueCount > 0) && (qMax(0, bitrate) >= valueCount))
 	{
 		MUTILS_THROW("The specified bitrate/quality is out of range!");
 	}
diff --git a/src/Encoder_Wave.cpp b/src/Encoder_Wave.cpp
index 809bddbc..397468a4 100644
--- a/src/Encoder_Wave.cpp
+++ b/src/Encoder_Wave.cpp
@@ -22,18 +22,18 @@
 
 #include "Encoder_Wave.h"
 
+#include <MUtils/Global.h>
+#include <MUtils/OSSupport.h>
+
 #include "Global.h"
 #include "Model_Settings.h"
 
-#include <QDir>
-
-//Windows includes
-#define NOMINMAX
-#define WIN32_LEAN_AND_MEAN
-#include <Windows.h>
-#include <Shellapi.h>
-
-#define FIX_SEPARATORS(STR) for(int i = 0; STR[i]; i++) { if(STR[i] == L'/') STR[i] = L'\\'; }
+typedef struct _callback_t
+{
+	WaveEncoder   *pInstance;
+	volatile bool *abortFlag;
+}
+callback_t;
 
 ///////////////////////////////////////////////////////////////////////////////
 // Encoder Info
@@ -134,52 +134,42 @@ WaveEncoder::~WaveEncoder(void)
 
 bool WaveEncoder::encode(const QString &sourceFile, const AudioFileModel_MetaInfo &metaInfo, const unsigned int duration, const QString &outputFile, volatile bool *abortFlag)
 {
-	SHFILEOPSTRUCTW fileOperation;
-	memset(&fileOperation, 0, sizeof(SHFILEOPSTRUCTW));
-	fileOperation.fFlags = FOF_SILENT | FOF_NOCONFIRMATION | FOF_NOCONFIRMMKDIR | FOF_NOERRORUI | FOF_FILESONLY;
+	emit messageLogged(QString("Copy file \"%1\" to \"%2\"\n").arg(sourceFile, outputFile));
 
-	emit messageLogged(QString("Copy file \"%1\" to \"%2\"").arg(sourceFile, outputFile));
-	fileOperation.wFunc = FO_COPY;
+	callback_t callbackData;
+	callbackData.abortFlag = abortFlag;
+	callbackData.pInstance = this;
 
-	/*
-	if(lamexp_temp_folder().compare(QFileInfo(sourceFile).canonicalPath(), Qt::CaseInsensitive) == 0)
+	emit statusUpdated(0);
+	const bool success = MUtils::OS::copy_file(sourceFile, outputFile, true, progressCallback, &callbackData);
+	emit statusUpdated(100);
+
+	if (success)
 	{
-		//If the source is in the TEMP folder take shortcut and move the file
-		emit messageLogged(QString("Moving file \"%1\" to \"%2\"").arg(sourceFile, outputFile));
-		fileOperation.wFunc = FO_MOVE;
+		emit messageLogged(QLatin1String("File copied successfully."));
 	}
 	else
 	{
-		//...otherwise we actually copy the file in order to keep the source
-		emit messageLogged(QString("Copy file \"%1\" to \"%2\"").arg(sourceFile, outputFile));
-		fileOperation.wFunc = FO_COPY;
+		emit messageLogged((*abortFlag) ? QLatin1String("Operation cancelled by user!")  : QLatin1String("Error: Failed to copy file!"));
 	}
-	*/
-	
-	size_t srcLen = wcslen(reinterpret_cast<const wchar_t*>(sourceFile.utf16())) + 3;
-	wchar_t *srcBuffer = new wchar_t[srcLen];
-	memset(srcBuffer, 0, srcLen * sizeof(wchar_t));
-	wcsncpy_s(srcBuffer, srcLen, reinterpret_cast<const wchar_t*>(sourceFile.utf16()), _TRUNCATE);
-	FIX_SEPARATORS (srcBuffer);
-	fileOperation.pFrom = srcBuffer;
 
-	size_t outLen = wcslen(reinterpret_cast<const wchar_t*>(outputFile.utf16())) + 3;
-	wchar_t *outBuffer = new wchar_t[outLen];
-	memset(outBuffer, 0, outLen * sizeof(wchar_t));
-	wcsncpy_s(outBuffer, outLen, reinterpret_cast<const wchar_t*>(outputFile.utf16()), _TRUNCATE);
-	FIX_SEPARATORS (outBuffer);
-	fileOperation.pTo = outBuffer;
+	return success;
+}
 
-	emit statusUpdated(0);
-	int result = SHFileOperation(&fileOperation);
-	emit statusUpdated(100);
+bool WaveEncoder::progressCallback(const double &progress, void *const userData)
+{
+	const callback_t *const ptr = reinterpret_cast<callback_t*>(userData);
+	if (*(ptr->abortFlag))
+	{
+		return false; /*user aborted*/
+	}
+	ptr->pInstance->updateProgress(progress);
+	return true;
+}
 
-	emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", result));
-
-	delete [] srcBuffer;
-	delete [] outBuffer;
-
-	return (result == 0 && fileOperation.fAnyOperationsAborted == false);
+void WaveEncoder::updateProgress(const double &progress)
+{
+	emit statusUpdated(qRound(progress * 100.0));
 }
 
 bool WaveEncoder::isFormatSupported(const QString &containerType, const QString &containerProfile, const QString &formatType, const QString &formatProfile, const QString &formatVersion)
diff --git a/src/Encoder_Wave.h b/src/Encoder_Wave.h
index 27b91933..785409d5 100644
--- a/src/Encoder_Wave.h
+++ b/src/Encoder_Wave.h
@@ -40,4 +40,8 @@ public:
 	//Encoder info
 	virtual const AbstractEncoderInfo *toEncoderInfo(void) const { return getEncoderInfo(); }
 	static const AbstractEncoderInfo *getEncoderInfo(void);
+
+private:
+	static bool progressCallback(const double &progress, void *const userData);
+	void updateProgress(const double &progress);
 };