diff --git a/build_mingw32 b/build_mingw32
index 3dd1f3726..b125afa93 100755
--- a/build_mingw32
+++ b/build_mingw32
@@ -1,4 +1,4 @@
 MINGW=/opt/mingw32
 export PATH=$PATH:$MINGW/bin
-cmake .. -DCMAKE_TOOLCHAIN_FILE=cmake/modules/Win32Toolchain.cmake
+cmake .. -DCMAKE_TOOLCHAIN_FILE=../cmake/modules/Win32Toolchain.cmake
 
diff --git a/cmake/modules/Win32Toolchain.cmake b/cmake/modules/Win32Toolchain.cmake
index 6d5030107..afdd54df5 100644
--- a/cmake/modules/Win32Toolchain.cmake
+++ b/cmake/modules/Win32Toolchain.cmake
@@ -36,6 +36,9 @@ SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
 
 SET(PKG_CONFIG_EXECUTABLE ${MINGW_PREFIX}/bin/pkg-config)
 
+SET(CMAKE_C_FLAGS "-march=i686 -mtune=generic")
+SET(CMAKE_CXX_FLAGS ${CMAKE_C_FLAGS})
+
 INCLUDE_DIRECTORIES(${MINGW_PREFIX}/include)
 LINK_DIRECTORIES(${MINGW_PREFIX}/lib ${MINGW_PREFIX}/bin)
 
diff --git a/data/projects/covers/J.S.Bach-Preludium_and_Fugue_A-Minor.mmpz b/data/projects/covers/J.S.Bach-Preludium_and_Fugue_A-Minor.mmpz
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diff --git a/data/samples/drums/Korg N1R Stereo Kit/BD01.ogg b/data/samples/drums/Korg N1R Stereo Kit/BD01.ogg
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diff --git a/data/samples/drums/Korg N1R Stereo Kit/TD11.ogg b/data/samples/drums/Korg N1R Stereo Kit/TD11.ogg
new file mode 100644
index 000000000..73ee386b3
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diff --git a/data/samples/drums/Korg N1R Stereo Kit/TD12.ogg b/data/samples/drums/Korg N1R Stereo Kit/TD12.ogg
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diff --git a/include/AutomatableModel.h b/include/AutomatableModel.h
index 0f9308975..e419190d1 100644
--- a/include/AutomatableModel.h
+++ b/include/AutomatableModel.h
@@ -225,9 +225,6 @@ protected:
 
 	float fittedValue( float _value ) const;
 
-	float m_minValue;
-	float m_maxValue;
-	float m_value;
 
 private:
 	void linkModel( AutomatableModel * _model );
@@ -235,7 +232,10 @@ private:
 
 
 	DataType m_dataType;
+	float m_value;
 	float m_initValue;
+	float m_minValue;
+	float m_maxValue;
 	float m_step;
 	float m_range;
 
diff --git a/include/Instrument.h b/include/Instrument.h
index 8621dffa5..bfc056272 100644
--- a/include/Instrument.h
+++ b/include/Instrument.h
@@ -41,64 +41,137 @@ class notePlayHandle;
 class track;
 
 
+/*! \brief Provides a standard interface for all instrument plugins.
+ *
+ * All instrument plugins have to derive from this class and implement the
+ * according virtual methods (see below). An instrument is instantiated by an
+ * InstrumentTrack.
+ *
+ * Instrument plugins can operate in two modes: process audio per note or
+ * process audio per Mixer period (one continuous audio stream).
+ * For the latter one, the instrument has to create an InstrumentPlayHandle
+ * for itself and re-implement #play( sampleFrame * ). When processing audio
+ * per note, overload the #playNote( notePlayHandle *, sampleFrame * ) and
+ * #deleteNotePluginData( notePlayHandle * ).
+ */
 class EXPORT Instrument : public Plugin
 {
 public:
-	Instrument( InstrumentTrack * _instrument_track,
-					const Descriptor * _descriptor );
+	/*! \brief Constructs an Instrument object.
+	 *
+	 * The constructor for Instrument objects.
+	 * \param instrumentTrack The InstrumentTrack this Instrument belongs to.
+	 * \param descriptor A Plugin::Descriptor holding information about the
+	 * instrument plugin.
+	 */
+	Instrument( InstrumentTrack * instrumentTrack,
+					const Descriptor * descriptor );
 	virtual ~Instrument();
 
-	// --------------------------------------------------------------------
-	// functions that can/should be re-implemented:
-	// --------------------------------------------------------------------
+	/*! \brief Generates audio data for the next mixer period.
+	 *
+	 * If the instrument only generates one continuous audio stream (i.e. is
+	 * not capable of generating individual audio streams for each active
+	 * note), it has to overload this method, generate the audio data (should
+	 * use working buffer to improve cache hit rate and eliminate memory
+	 * de-/allocations) and finally call InstrumentTrack::processAudioBuffer()
+	 * and pass NULL for the last parameter.
+	 *
+	 * \param workingBuf A buffer the instrument should operate on (data in it
+	 * is not used after this function returns).
+	 */
+	virtual void play( sampleFrame * workingBuffer );
 
-	// if the plugin doesn't play each note, it can create an instrument-
-	// play-handle and re-implement this method, so that it mixes its
-	// output buffer only once per mixer-period
-	virtual void play( sampleFrame * _working_buffer );
-
-	// to be implemented by actual plugin
-	virtual void playNote( notePlayHandle * /* _note_to_play */,
-					sampleFrame * /* _working_buf */ )
+	/*! \brief Generates audio data for the given NotePlayHandle.
+	 *
+	 * When generating audio data per-note (recommended), the instrument has
+	 * to do this in an overloaded version of this method. It can allocate
+	 * note-specific data objects (sound generators, generator settings etc.)
+	 * in the given NotePlayHandle if NotePlayHandle::totalFramesPlayed()==0.
+	 * Store this data in NotePlayHandle::m_pluginData. See the
+	 * deleteNotePluginData() method below for information how to free the
+	 * allocated data.
+	 * Like play(), call Instrument::processAudioBuffer() after sound data
+	 * has been generated and pass the NotePlayHandle as last parameter.
+	 *
+	 * \param noteToPlay A NotePlayHandle handle for the note to play
+	 * \param workingBuf A buffer the instrument should operate on (data in it
+	 * is not used after this function returns).
+	 */
+	virtual void playNote( notePlayHandle * noteToPlay,
+					sampleFrame * workingBuf )
 	{
+		Q_UNUSED(noteToPlay)
+		Q_UNUSED(workingBuf)
 	}
-		
-	// needed for deleting plugin-specific-data of a note - plugin has to
-	// cast void-ptr so that the plugin-data is deleted properly
-	// (call of dtor if it's a class etc.)
-	virtual void deleteNotePluginData( notePlayHandle * _note_to_play );
 
-	// Get number of sample-frames that should be used when playing beat
-	// (note with unspecified length)
-	// Per default this function returns 0. In this case, channel is using
-	// the length of the longest envelope (if one active).
-	virtual f_cnt_t beatLen( notePlayHandle * _n ) const;
+	/*! \brief Deletes data allocated for playing a certain note.
+	 *
+	 * In Instrument::playNote() an instrument usually allocates data for each
+	 * note to store current state and or generator objects. After a note has
+	 * finished playing, this method is called to free the data that was
+	 * allocated for playing this note. Plugin has to cast
+	 * NotePlayHandle::m_pluginData to according type and delete it.
+	 */
+	virtual void deleteNotePluginData( notePlayHandle * noteToPlay );
+
+	/*! \brief Returns number of frames for notes with unspecified length.
+	 *
+	 * When playing a note with unspecified length (e.g. a step in the
+	 * BB-Editor), the sequencer core somehow has to determine for how long
+	 * to play this note. Plugins can overload this method in order to specify
+	 * the length of such notes (in frames). A sampler for example would return
+	 * the length of the loaded sample at the according pitch.
+	 * Per default this method returns 0 which means the InstrumentTrack will
+	 * look for the longest active envelope and use that value. Otherwise the
+	 * note will not be played.
+	 *
+	 * \param notePlayHandle A NotePlayHandle describing the concerned note.
+	 */
+	virtual f_cnt_t beatLen( notePlayHandle * n ) const;
 
 
-	// some instruments need a certain number of release-frames even
-	// if no envelope is active - such instruments can re-implement this
-	// method for returning how many frames they at least like to have for
-	// release
+	/*! \brief Returns number of desired release frames for this instrument.
+	 *
+	 * Some instruments need a certain number of release frames even
+	 * if no envelope is active - such instruments can re-implement this
+	 * method for returning how many frames they at least like to have for
+	 * release.
+	 */
 	virtual f_cnt_t desiredReleaseFrames() const
 	{
 		return 0;
 	}
 
-	// return false if instrument is not bendable
+	/*! \brief Returns whether instrument is bendable.
+	 *
+	 * This is particularly important for instruments that do not supporting
+	 * pitch bending. If the overloaded function returns false, the pitch bend
+	 * knob will be hidden in InstrumentTrackWindow.
+	 */
 	inline virtual bool isBendable() const
 	{
 		return true;
 	}
 
-	// return true if instruments reacts to MIDI events passed to
-	// handleMidiEvent() rather than playNote() & Co
+	/*! \brief Returns true if instrument if instrument is MIDI based.
+	 *
+	 * Instruments should return true here if they react to MIDI events passed
+	 * to handleMidiEvent() rather than playNote() & Co.
+	 */
 	inline virtual bool isMidiBased() const
 	{
 		return false;
 	}
 
-	// sub-classes can re-implement this for receiving all incoming
-	// MIDI-events
+	/*! \brief Allows to handle given MidiEvent.
+	 *
+	 * Subclasses can re-implement this for receiving all incoming MIDI events.
+	 *
+	 * \param midiEvent The MIDI event just received
+	 * \param midiTime An optional offset for the MIDI event within current
+	 * mixer period (e.g. NoteOn at frame X).
+	 */
 	inline virtual bool handleMidiEvent( const midiEvent &, const midiTime & )
 	{
 		return false;
@@ -106,17 +179,25 @@ public:
 
 	virtual QString fullDisplayName() const;
 
-	// --------------------------------------------------------------------
-	// provided functions:
-	// --------------------------------------------------------------------
-
-	// instantiate instrument-plugin with given name or return NULL
-	// on failure
-	static Instrument * instantiate( const QString & _plugin_name,
-									InstrumentTrack * _instrument_track );
+	/*! \brief Instantiates instrument plugin with given name.
+	 *
+	 * Tries to instantiate instrument plugin with given name from available
+	 * plugin files.
+	 *
+	 * \param pluginName The internal identifier for the plugin
+	 * \param instrumentTrack The InstrumentTrack the new instrument should
+	 * belong to.
+	 *
+	 * \return Pointer to instantiated instrument plugin or NULL on failure.
+	 */
+	static Instrument * instantiate( const QString & pluginName,
+									InstrumentTrack * instrumentTrack );
 
+	/*! \brief Returns whether this instance belongs to given track. */
 	virtual bool isFromTrack( const track * _track ) const;
 
+	/*! \brief Returns whether the InstrumentTrack this instrument is attached
+	 * to is muted. */
 	bool isMuted() const;
 
 
@@ -126,10 +207,14 @@ protected:
 		return m_instrumentTrack;
 	}
 
-	// instruments may use this to apply a soft fade out at the end of
-	// notes - method does this only if really less or equal
-	// desiredReleaseFrames() frames are left
-	void applyRelease( sampleFrame * buf, const notePlayHandle * _n );
+	/*! \brief Internal helper method to apply a release on given buffer.
+	 *
+	 * Instrument plugins may use this to apply a soft fade-out at the end of
+	 * a note. Please note that this is only done if the number of frames
+	 * returned by NotePlayHandle::framesLeft() is equal or below the number
+	 * of frames returned by Instrument::desiredReleaseFrames().
+	 */
+	void applyRelease( sampleFrame * buf, const notePlayHandle * n );
 
 
 private:
diff --git a/include/base64.h b/include/base64.h
index 74578684f..ebdfe47b3 100644
--- a/include/base64.h
+++ b/include/base64.h
@@ -2,8 +2,8 @@
  * base64.h - namespace base64 with methods for encoding/decoding binary data
  *            to/from base64
  *
- * Copyright (c) 2006-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
- * 
+ * Copyright (c) 2006-2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ *
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
  * This program is free software; you can redistribute it and/or
@@ -23,7 +23,6 @@
  *
  */
 
-
 #ifndef _BASE64_H
 #define _BASE64_H
 
@@ -40,11 +39,12 @@ namespace base64
 		_dst = QByteArray( _data, _size ).toBase64();
 	}
 
-	inline void decode( const QString & _b64, char * * _data, int * _size )
+	template<class T>
+	inline void decode( const QString & _b64, T * * _data, int * _size )
 	{
-		QByteArray data = QByteArray::fromBase64( _b64.toAscii() );
+		QByteArray data = QByteArray::fromBase64( _b64.toUtf8() );
 		*_size = data.size();
-		*_data = new char[*_size];
+		*_data = new T[*_size / sizeof(T)];
 		memcpy( *_data, data.constData(), *_size );
 	}
 	// deprecated!!
diff --git a/include/track_container.h b/include/track_container.h
index e81be6b77..7dd93dc1d 100644
--- a/include/track_container.h
+++ b/include/track_container.h
@@ -2,8 +2,8 @@
  * track_container.h - base-class for all track-containers like Song-Editor,
  *                     BB-Editor...
  *
- * Copyright (c) 2004-2008 Tobias Doerffel <tobydox/at/users.sourceforge.net>
- * 
+ * Copyright (c) 2004-2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ *
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
  * This program is free software; you can redistribute it and/or
@@ -23,11 +23,10 @@
  *
  */
 
-
 #ifndef _TRACK_CONTAINER_H
 #define _TRACK_CONTAINER_H
 
-#include <QReadWriteLock>
+#include <QtCore/QReadWriteLock>
 
 #include "track.h"
 #include "JournallingObject.h"
diff --git a/plugins/stk/mallets/mallets.h b/plugins/stk/mallets/mallets.h
index 937d6686c..f40d89152 100644
--- a/plugins/stk/mallets/mallets.h
+++ b/plugins/stk/mallets/mallets.h
@@ -36,6 +36,12 @@
 #include "note_play_handle.h"
 #include "led_checkbox.h"
 
+// As of Stk 4.4 all classes and types have been moved to the namespace "stk".
+// However in older versions this namespace does not exist, therefore declare it
+// so this plugin builds with all versions of Stk.
+namespace stk { } ;
+using namespace stk;
+
 
 class malletsSynth
 {
diff --git a/plugins/vestige/vestige.cpp b/plugins/vestige/vestige.cpp
index 3b6fb056b..7970dedb7 100644
--- a/plugins/vestige/vestige.cpp
+++ b/plugins/vestige/vestige.cpp
@@ -360,6 +360,11 @@ void VestigeInstrumentView::openPlugin()
 		engine::getMixer()->lock();
 		m_vi->loadFile( ofd.selectedFiles()[0] );
 		engine::getMixer()->unlock();
+		if( m_vi->m_plugin && m_vi->m_plugin->pluginWidget() )
+		{
+			m_vi->m_plugin->pluginWidget()->setWindowIcon(
+									PLUGIN_NAME::getIconPixmap( "logo" ) );
+		}
 	}
 }
 
diff --git a/plugins/vibed/vibed.cpp b/plugins/vibed/vibed.cpp
index f6630ec58..29206f865 100644
--- a/plugins/vibed/vibed.cpp
+++ b/plugins/vibed/vibed.cpp
@@ -241,7 +241,7 @@ void vibed::loadSettings( const QDomElement & _this )
 			float * shp = 0;
 			base64::decode( _this.attribute( "graph" +
 						QString::number( i ) ),
-						(char * *) &shp,
+						&shp,
 						&size );
 			// TODO: check whether size == 128 * sizeof( float ),
 			// otherwise me might and up in a segfault
diff --git a/plugins/vst_base/remote_vst_plugin.cpp b/plugins/vst_base/remote_vst_plugin.cpp
index 0f9ba6c23..bfeffb0be 100644
--- a/plugins/vst_base/remote_vst_plugin.cpp
+++ b/plugins/vst_base/remote_vst_plugin.cpp
@@ -813,7 +813,7 @@ void RemoteVstPlugin::saveChunkToFile( const std::string & _file )
 
 void RemoteVstPlugin::loadChunkFromFile( const std::string & _file, int _len )
 {
-	char buf[_len];
+	char * buf = NULL;
 
 	void * chunk = NULL;
 	// various plugins need this in order to not crash when setting
@@ -823,7 +823,8 @@ void RemoteVstPlugin::loadChunkFromFile( const std::string & _file, int _len )
 	// allocated buffer big enough?
 	if( _len > actualLen )
 	{
-		// no, manually try our local buffer
+		// no, then manually allocate a buffer
+		buf = new char[_len];
 		chunk = buf;
 	}
 
@@ -831,6 +832,8 @@ void RemoteVstPlugin::loadChunkFromFile( const std::string & _file, int _len )
 	read( fd, chunk, _len );
 	close( fd );
 	pluginDispatch( 24, 0, _len, chunk );
+
+	delete[] buf;
 }
 
 
diff --git a/src/core/AutomatableModel.cpp b/src/core/AutomatableModel.cpp
index 7762edcb8..2864f266c 100644
--- a/src/core/AutomatableModel.cpp
+++ b/src/core/AutomatableModel.cpp
@@ -44,11 +44,11 @@ AutomatableModel::AutomatableModel( DataType _type,
 						const QString & _display_name,
 						bool _default_constructed ) :
 	Model( _parent, _display_name, _default_constructed ),
-	m_minValue( _min ),
-	m_maxValue( _max ),
 	m_dataType( _type ),
 	m_value( _val ),
 	m_initValue( _val ),
+	m_minValue( _min ),
+	m_maxValue( _max ),
 	m_step( _step ),
 	m_range( _max - _min ),
 	m_journalEntryReady( false ),
diff --git a/src/gui/MainWindow.cpp b/src/gui/MainWindow.cpp
index adfb00918..67929e475 100644
--- a/src/gui/MainWindow.cpp
+++ b/src/gui/MainWindow.cpp
@@ -823,6 +823,8 @@ void MainWindow::resetWindowTitle()
 
 bool MainWindow::mayChangeProject()
 {
+	engine::getSong()->stop();
+
 	if( !engine::getSong()->isModified() )
 	{
 		return true;