diff --git a/GUI/Widgets/PawfalYesNo.C b/GUI/Widgets/PawfalYesNo.C
index 5174762..a283318 100644
--- a/GUI/Widgets/PawfalYesNo.C
+++ b/GUI/Widgets/PawfalYesNo.C
@@ -34,9 +34,20 @@ bool Pawfal_YesNo(const char *a,...)
 	    ::vsnprintf(buffer, 1024, a, ap);
 	}
 	va_end(ap);
-	
+#if !__APPLE__
 	PawfalYesNo pi(300, 100,buffer);
 	if (pi.go()) return true;
+#else
+	Str255 copy;
+	strncpy((char*)copy + 1, buffer, 253);
+	copy[0] = strlen((char*)copy+1);
+	AlertStdAlertParamRec	rec = { true, false, NULL, 
+		(StringPtr)-1, (StringPtr)-1, NULL, 
+		kAlertStdAlertOKButton, 0, kWindowAlertPositionParentWindowScreen };
+	SInt16					ret = 0;
+	StandardAlert(kAlertCautionAlert, copy, NULL, &rec, &ret);
+	return ret == kAlertStdAlertOKButton;
+#endif
 	return false;
 }
 
diff --git a/SpiralSound/Midi.C b/SpiralSound/Midi.C
index c3a0509..882a7fa 100644
--- a/SpiralSound/Midi.C
+++ b/SpiralSound/Midi.C
@@ -45,6 +45,10 @@ static int NKEYS = 30;
 MidiDevice *MidiDevice::m_Singleton;
 string MidiDevice::m_DeviceName;
  
+#if __APPLE__
+#define read	AppleRead
+#endif
+
 MidiDevice::MidiDevice() :
 m_Poly(1)
 {
@@ -52,9 +56,7 @@ m_Poly(1)
 	seq_handle=AlsaOpen();
 #else
 	Open();
-#endif
-
-	
+#endif	
 
 #ifdef KEYBOARD_SUPPORT
 	m_Oct=4;
@@ -78,6 +80,9 @@ MidiDevice::~MidiDevice()
 
 void MidiDevice::Close()
 {
+#if __APPLE__
+	AppleClose();
+#else
 	pthread_mutex_lock(m_Mutex);
 	pthread_cancel(m_MidiReader); 
 	pthread_mutex_unlock(m_Mutex);
@@ -86,11 +91,15 @@ void MidiDevice::Close()
 	close(m_MidiFd);
 	close(m_MidiWrFd);
 	cerr<<"Closed midi device"<<endl;
+#endif // !__APPLE__
 }
 
 
 void MidiDevice::Open()
 {
+#if __APPLE__
+	AppleOpen();
+#else
 	//if (!SpiralInfo::WANTMIDI) return;
 	
 	m_MidiFd = open(m_DeviceName.c_str(),O_RDONLY|O_SYNC);  
@@ -108,6 +117,7 @@ void MidiDevice::Open()
 	}
 	
 	cerr<<"Opened midi device ["<<m_DeviceName<<"]"<<endl;
+#endif // !__APPLE__
 	
 	m_Mutex = new pthread_mutex_t;
     pthread_mutex_init(m_Mutex, NULL);
@@ -402,3 +412,89 @@ snd_seq_t *MidiDevice::AlsaOpen()
 
 #endif
 
+#if __APPLE__
+
+void MidiDevice::AppleOpen()
+{
+	m_ReadFillIndex = m_ReadReadIndex = 0;
+	
+	OSStatus err = 0;
+
+	mMIDISource					= NULL;
+	mMIDIClient					= NULL;
+	mMIDIDestination			= NULL;
+	
+	err = MIDIClientCreate(CFSTR("org.pawpal.ssm"), NULL, NULL, &mMIDIClient);
+	if (err) printf("MIDIClientCreate failed returned %d\n", err);
+	
+	if (!err) {
+		err = MIDISourceCreate(mMIDIClient, CFSTR("SpiralSynth"), &mMIDISource);
+		if (err) printf("MIDIInputPortCreate failed returned %d\n", err);
+	}
+	
+	if (!err) {
+		err = MIDIDestinationCreate(mMIDIClient, CFSTR("SpiralSynth"), sMIDIRead, this, &mMIDIDestination);
+		MIDIObjectSetIntegerProperty(mMIDIDestination, kMIDIPropertyUniqueID, 'SSmP');
+	}
+}
+
+
+void MidiDevice::AppleClose()
+{
+	if (mMIDIDestination)
+		MIDIEndpointDispose(mMIDIDestination);
+	if (mMIDISource)
+		MIDIEndpointDispose(mMIDISource);
+	mMIDISource = NULL;
+	if (mMIDIClient)
+		MIDIClientDispose(mMIDIClient);
+	mMIDIClient = NULL;
+}
+
+int MidiDevice::AppleWrite(int dummy, unsigned char *outbuffer, int maxlen)
+{
+	return 0;
+}
+
+int MidiDevice::AppleRead(int dummy, unsigned char *outbuffer, int maxlen)
+{
+	if (!mMIDIClient)
+		return -1;
+	int len = 0;
+	do {
+		while (m_ReadReadIndex == m_ReadFillIndex)
+			usleep(1000);	// 1ms
+		int readl =  m_ReadFillIndex - m_ReadReadIndex;
+		if (readl < 0)
+			readl += midi_ReadSize;	// wrapped
+		while (len < maxlen && readl-- > 0) {
+			int r = m_ReadReadIndex;
+			outbuffer[len++] = m_ReadBuffer[r];
+			r++;
+			m_ReadReadIndex = r % midi_ReadSize;
+		}
+	} while (len < maxlen);
+	return len;
+}
+
+void MidiDevice::sMIDIRead(const MIDIPacketList *pktlist, void *readProcRefCon, void *srcConnRefCon)
+{
+	MidiDevice & t = *((MidiDevice*)readProcRefCon);
+	
+	const MIDIPacket *packet = &pktlist->packet[0];
+	for (int i = 0; i < (int)pktlist->numPackets; i++) {
+		const MIDIPacket & p = *packet;
+
+		for (int b = 0; b < p.length; b++) {
+		//	printf("%02x ", p.data[b]);
+			int d = t.m_ReadFillIndex;
+			t.m_ReadBuffer[d] = p.data[b];
+			d++;
+			t.m_ReadFillIndex = d % midi_ReadSize;
+		}
+	//	printf("\n");
+		packet = MIDIPacketNext(packet);
+	}
+}
+
+#endif
diff --git a/SpiralSound/Midi.h b/SpiralSound/Midi.h
index adf4dc4..b58fe4f 100644
--- a/SpiralSound/Midi.h
+++ b/SpiralSound/Midi.h
@@ -36,6 +36,10 @@ using namespace std;
 #include <alsa/asoundlib.h>
 #endif
 
+#if __APPLE__
+#include <CoreMIDI/MIDIServices.h>
+#endif
+
 class MidiEvent
 {
 public:
@@ -97,6 +101,25 @@ private:
 	snd_seq_t *seq_handle;
 	snd_seq_t *AlsaOpen();
 #endif
+
+#if __APPLE__
+	MIDIClientRef					mMIDIClient;
+	MIDIEndpointRef					mMIDISource;
+	MIDIEndpointRef					mMIDIDestination;
+	
+	#define midi_ReadSize			4096
+	unsigned char					m_ReadBuffer[midi_ReadSize];
+	volatile int					m_ReadFillIndex;
+	volatile int					m_ReadReadIndex;
+
+	void MidiDevice::AppleOpen();
+	void MidiDevice::AppleClose();
+	int MidiDevice::AppleWrite(int dummy, unsigned char *outbuffer, int maxlen);
+	int MidiDevice::AppleRead(int dummy, unsigned char *outbuffer, int maxlen);
+	
+	static void MidiDevice::sMIDIRead(const MIDIPacketList *pktlist, void *readProcRefCon, void *srcConnRefCon);
+
+#endif 
 };
 
 #endif
diff --git a/SpiralSound/Plugins/LFOPlugin/LFOPlugin.h b/SpiralSound/Plugins/LFOPlugin/LFOPlugin.h
index 192f853..c49cac6 100644
--- a/SpiralSound/Plugins/LFOPlugin/LFOPlugin.h
+++ b/SpiralSound/Plugins/LFOPlugin/LFOPlugin.h
@@ -35,7 +35,8 @@ class LFOPlugin : public SpiralPlugin {
       virtual void StreamOut (ostream &s);
       virtual void StreamIn (istream &s);
 	  
-      enum Type {SINE, TRIANGLE, SQUARE, SAW};
+	  typedef char Type;
+      enum {SINE, TRIANGLE, SQUARE, SAW};
 	  
       void WriteWaves();
       void NoteTrigger (int V, int s, int v);
diff --git a/SpiralSound/Plugins/OscillatorPlugin/OscillatorPlugin.h b/SpiralSound/Plugins/OscillatorPlugin/OscillatorPlugin.h
index 8b66dd0..a9559a7 100644
--- a/SpiralSound/Plugins/OscillatorPlugin/OscillatorPlugin.h
+++ b/SpiralSound/Plugins/OscillatorPlugin/OscillatorPlugin.h
@@ -34,7 +34,8 @@ public:
 	virtual void	    StreamOut(ostream &s);
 	virtual void	    StreamIn(istream &s);
 	
-	enum Type{NONE,SQUARE,SAW,NOISE};
+	typedef char Type;
+	enum {NONE,SQUARE,SAW,NOISE};
 	
 	void ModulateFreq(Sample *data) {m_FreqModBuf=data;}
 	void ModulatePulseWidth(Sample *data) {m_PulseWidthModBuf=data;}
diff --git a/SpiralSound/Plugins/SpiralLoopPlugin/GUI/Widgets/Fl_Loop.C b/SpiralSound/Plugins/SpiralLoopPlugin/GUI/Widgets/Fl_Loop.C
index 4ce5ec6..20f564f 100644
--- a/SpiralSound/Plugins/SpiralLoopPlugin/GUI/Widgets/Fl_Loop.C
+++ b/SpiralSound/Plugins/SpiralLoopPlugin/GUI/Widgets/Fl_Loop.C
@@ -186,8 +186,10 @@ void Fl_Loop::DrawPosMarker()
 	if (m_Pos) 
 	{
 		float Angle=(*m_Pos/m_Length)*360.0;
-		fl_line_style(FL_SOLID, 3, NULL);								
+		fl_line_style(FL_SOLID, 3, NULL);
+#if !__APPLE__
     	XSetFunction(fl_display,fl_gc,GXxor);
+#endif
 		fl_line(m_IndSX,m_IndSY,m_IndEX,m_IndEY);
 		
 		fl_color(FL_BLUE);
@@ -200,7 +202,9 @@ void Fl_Loop::DrawPosMarker()
 		
 		fl_line(m_IndSX,m_IndSY,m_IndEX,m_IndEY);
 		fl_line_style(FL_SOLID, 1, NULL);
+#if !__APPLE__
 		XSetFunction(fl_display,fl_gc,GXcopy);					
+#endif
 	}
 	
 	if (m_PosMarkerCount>POSMARKER_MAX)
diff --git a/SpiralSound/Plugins/WaveTablePlugin/WaveTablePlugin.h b/SpiralSound/Plugins/WaveTablePlugin/WaveTablePlugin.h
index ed8bdcf..13027e5 100644
--- a/SpiralSound/Plugins/WaveTablePlugin/WaveTablePlugin.h
+++ b/SpiralSound/Plugins/WaveTablePlugin/WaveTablePlugin.h
@@ -40,7 +40,8 @@ public:
 	// has to be defined in the plugin	
 	virtual void UpdateGUI() { Fl::check(); }
 
-	enum Type{SINE,SQUARE,SAW,REVSAW,TRIANGLE,PULSE1,PULSE2,INVSINE};
+	typedef char Type;
+	enum {SINE,SQUARE,SAW,REVSAW,TRIANGLE,PULSE1,PULSE2,INVSINE};
 	
 	void WriteWaves();
 	void NoteTrigger(int V,int s,int v);
diff --git a/SpiralSound/Plugins/Widgets/Fl_EventMap.C b/SpiralSound/Plugins/Widgets/Fl_EventMap.C
index 65cb28b..2d9aa4e 100644
--- a/SpiralSound/Plugins/Widgets/Fl_EventMap.C
+++ b/SpiralSound/Plugins/Widgets/Fl_EventMap.C
@@ -34,8 +34,8 @@ int LINE_COLOUR;// = 140;
 
 ////////////////////////////////////////////////////////////////////
 
-Fl_EventMap::Fl_EventMap(int x, int y, int w, int h, const char* label) :
-Fl_Group(x,y,w,h,label),
+Fl_EventMap::Fl_EventMap(int x, int y, int ww, int h, const char* label) :
+Fl_Group(x,y,ww,h,label),
 m_Type(ARRANGE_MAP),
 m_Update(true),
 m_Zoom(1.0f),
@@ -62,6 +62,7 @@ m_FirstUpdate(true)
 	LINE_COLOUR=fl_color();
 	
 	fl_color(200,200,200);
+// SpiralSound/Plugins/Widgets/Fl_EventMap.C:65: declaration of `w' shadows a parameter
 	int w=fl_color();
 	fl_color(50,50,50);
 	int b=fl_color();
@@ -263,12 +264,14 @@ void Fl_EventMap::SetTime(float Time)
 		int Depth=parent()->h();
 				
 		if (DrawPos>Left && DrawPos<Left+Width)
-		{		
+		{
+#if !__APPLE__
   			XSetFunction(fl_display,fl_gc,GXxor);
   			XSetForeground(fl_display, fl_gc, 0xff00ffff);
 			if (!m_FirstUpdate) fl_line(m_LastPos,Top,m_LastPos,Depth);
 			fl_line(DrawPos,Top,DrawPos,Depth);
 			XSetFunction(fl_display,fl_gc,GXcopy);
+#endif
 			m_LastPos=DrawPos;
 		}
 	}
diff --git a/SpiralSound/RiffWav.C b/SpiralSound/RiffWav.C
index ae81a5a..bce62c5 100644
--- a/SpiralSound/RiffWav.C
+++ b/SpiralSound/RiffWav.C
@@ -32,9 +32,11 @@
 const int HEADERLEN = (4+24+8);
 
 #if __BYTE_ORDER == BIG_ENDIAN
-
-#define SWAPSHORT(a) (a)=(((a)<<8)|((a)>>8))
+#define SWAPSHORT(a) (a)=(((a)<<8)|(((a)>>8)&0xff))
 #define SWAPINT(a) (a)=(((a)&0x000000ff)<<24)|(((a)&0x0000ff00)<<8)|(((a)&0x00ff0000)>>8)|(((a)&0xff000000)>>24)
+#else
+#define SWAPSHORT(a)
+#define SWAPINT(a)
 #endif
 
 int WavFile::Open(string FileName, Mode mode, Channels channels)
@@ -92,7 +94,6 @@ int WavFile::Open(string FileName, Mode mode, Channels channels)
 		
 		m_DataHeader.DataLengthBytes=0;
 			
-		#if __BYTE_ORDER == BIG_ENDIAN
 		SWAPINT(m_Header.RiffFileLength);
 		SWAPINT(m_Header.FmtLength);
 		SWAPSHORT(m_Header.FmtTag);
@@ -102,7 +103,6 @@ int WavFile::Open(string FileName, Mode mode, Channels channels)
 		SWAPSHORT(m_Header.FmtBlockAlign);
 		SWAPSHORT(m_Header.FmtBitsPerSample);
 		SWAPINT(m_DataHeader.DataLengthBytes);
-		#endif
 			
 		fwrite(&m_Header,1,sizeof(CanonicalWavHeader),m_Stream);		
 		fwrite(&m_DataHeader,1,sizeof(DataHeader),m_Stream);		
@@ -113,7 +113,16 @@ int WavFile::Open(string FileName, Mode mode, Channels channels)
 	if (mode==READ)
 	{
 		fread(&m_Header,sizeof(CanonicalWavHeader),1,m_Stream);
-		
+
+		SWAPINT(m_Header.RiffFileLength);
+		SWAPINT(m_Header.FmtLength);
+		SWAPSHORT(m_Header.FmtTag);
+		SWAPSHORT(m_Header.FmtChannels);
+		SWAPINT(m_Header.FmtSamplerate);
+		SWAPINT(m_Header.FmtBytesPerSec);
+		SWAPSHORT(m_Header.FmtBlockAlign);
+		SWAPSHORT(m_Header.FmtBitsPerSample);
+
 		#ifdef TRACE_OUT		
 		cerr<<FileName<<endl;
 		cerr<<"RiffFileLength "<<m_Header.RiffFileLength<<endl;
@@ -133,7 +142,9 @@ int WavFile::Open(string FileName, Mode mode, Channels channels)
 		}
 		
 		fread(&m_DataHeader,sizeof(DataHeader),1,m_Stream);
-		
+
+		SWAPINT(m_DataHeader.DataLengthBytes);
+
 		while (m_DataHeader.DataName[0]!='d' || 
 			   m_DataHeader.DataName[1]!='a' || 
 			   m_DataHeader.DataName[2]!='t' || 
@@ -206,10 +217,15 @@ int WavFile::Save(Sample &data)
 		float v=data[n];
 		if (v<-1) v=-1; if (v>1) v=1;
 		temp[n]=(short)(v*SHRT_MAX);
+		SWAPSHORT(temp[n]);
 	}
 	
 	m_DataHeader.DataLengthBytes+=data.GetLength()*2;
 	fwrite(temp,sizeof(&temp),data.GetLength()/2,m_Stream);
+	
+	// leak!
+	delete[] temp;
+	
 	return 1;
 }
 
@@ -270,7 +286,9 @@ int WavFile::Load(Sample &data)
 			long value=0;
 			for (int i=0; i<m_Header.FmtChannels; i++)
 			{
-				value+=TempBuf[(n*m_Header.FmtChannels)+i];
+				short s = TempBuf[(n*m_Header.FmtChannels)+i];
+				SWAPSHORT(s);
+				value+=s;
 			}
 			value/=m_Header.FmtChannels;
 			
@@ -280,7 +298,7 @@ int WavFile::Load(Sample &data)
 		m_DataHeader.DataLengthBytes /= m_Header.FmtChannels;
 		m_Header.FmtChannels=1;
 		 
-		delete TempBuf;
+		delete[] TempBuf;
 	}
 	else // it's mono.
 	{
@@ -294,10 +312,12 @@ int WavFile::Load(Sample &data)
 		
 		for (int n=0; n<GetSize(); n++)
 		{
-			data.Set(n,TempBuf[n]/(float)SHRT_MAX);
+			short s = TempBuf[n];
+			SWAPSHORT(s);
+			data.Set(n,s/(float)SHRT_MAX);
 		}
 		
-		delete TempBuf;
+		delete[] TempBuf;
 	}
 	
 	return 1;
@@ -324,7 +344,9 @@ int WavFile::Load(short *data)
 			long value=0;
 			for (int i=0; i<m_Header.FmtChannels; i++)
 			{
-				value+=TempBuf[(n*m_Header.FmtChannels)+i];
+				short s = TempBuf[(n*m_Header.FmtChannels)+i];
+				SWAPSHORT(s);
+				value+=s;
 			}
 			value/=m_Header.FmtChannels;
 			
@@ -334,13 +356,18 @@ int WavFile::Load(short *data)
 		m_DataHeader.DataLengthBytes /= m_Header.FmtChannels;
 		m_Header.FmtChannels=1;
 		
-		delete TempBuf;
+		delete[] TempBuf;
 	}
 	else // we can read the data directly in, it's mono.
 	{
     	if (m_DataHeader.DataLengthBytes==
 		(int)fread(data,1,m_DataHeader.DataLengthBytes,m_Stream))
     	{
+#if __BYTE_ORDER == BIG_ENDIAN
+			short *TempBuf = (short*)data;
+			for (int n=0; n < m_DataHeader.DataLengthBytes / 2; n++)
+				SWAPSHORT(TempBuf[n]);
+#endif
     	    return 1;
     	}
 	
@@ -389,7 +416,7 @@ int WavFile::LoadChunk(int NumSamples, Sample &ldata, Sample &rdata)
 			rdata.Set(n,TempBuf[(n*2)+1]/(float)SHRT_MAX);
 		}
 		
-		delete TempBuf;
+		delete[] TempBuf;
 	}
 	else // we can read the data directly in, it's mono.
 	{
diff --git a/SpiralSound/RiffWav.h b/SpiralSound/RiffWav.h
index a98ab4b..d993d1e 100644
--- a/SpiralSound/RiffWav.h
+++ b/SpiralSound/RiffWav.h
@@ -24,6 +24,12 @@
 #include <stdio.h>
 #include "Sample.h"
 
+#if __APPLE__
+// this is the traditional way of setting 2 bytes alignment
+// else the apple compiler might use 4, or even 8
+#pragma options align=mac68k
+#endif
+
 struct CanonicalWavHeader
 {
 	char  RiffName[4];
@@ -46,6 +52,10 @@ struct DataHeader
 	int   DataLengthBytes;
 };
 
+#if __APPLE__
+#pragma options align=reset
+#endif
+
 class WavFile
 {
 public:
diff --git a/SpiralSynthModularInfo.C b/SpiralSynthModularInfo.C
index 93b7b82..ed2964e 100644
--- a/SpiralSynthModularInfo.C
+++ b/SpiralSynthModularInfo.C
@@ -125,6 +125,11 @@ void SpiralSynthModularInfo::StreamInPrefs(istream &s)
 		s>>st;
 		if (st!="end") PLUGINVEC.push_back(st);
 	}
+#if __APPLE__
+	// ignore custom paths, plugins are encapsulated in the app anyway
+	// this prevents the program to fail if the user move the application icon
+	PLUGIN_PATH = PLUGIN_PATH_LOCATION;
+#endif
 }
 
 void SpiralSynthModularInfo::StreamOutPrefs(ostream &s)
diff --git a/main.cpp b/main.cpp
index 1d4e88a..c756ef8 100644
--- a/main.cpp
+++ b/main.cpp
@@ -99,9 +99,29 @@ void audioloop(void* o)
 }
 
 //////////////////////////////////////////////////////
+#if __APPLE__
+#include <CoreFoundation/CFBundle.h>
+#include <libgen.h>
+#endif
 
 int main(int argc, char **argv)
-{	
+{
+#if __APPLE__
+	// --with-plugindir=./Libraries
+	system("pwd");
+	CFBundleRef main	= CFBundleGetMainBundle();
+	CFURLRef	url		= main ? CFBundleCopyExecutableURL(main) : NULL;
+	CFStringRef path	= url ? CFURLCopyFileSystemPath(url, kCFURLPOSIXPathStyle) : NULL;
+	char *		dst		= (char*)CFStringGetCStringPtr(path, 0);
+	
+	printf("main %p url %p path %p dst %p", main, url, path, dst);
+	if (dst) {
+		printf("Have a valid name '%s'\n", dst);
+		chdir(dirname(dst));
+		chdir("..");
+	} else
+		printf("No base pathname\n");
+#endif
 	srand(time(NULL));
 	SpiralSynthModularInfo::Get()->LoadPrefs();