diff --git a/include/lgi/common/AudioView.h b/include/lgi/common/AudioView.h
--- a/include/lgi/common/AudioView.h
+++ b/include/lgi/common/AudioView.h
@@ -1,940 +1,977 @@
 /// Audio waveform display control
 #pragma once
 
 #include "lgi/common/Layout.h"
 #include "lgi/common/DisplayString.h"
 #include "lgi/common/Menu.h"
 #include "lgi/common/ClipBoard.h"
 #include "lgi/common/FileSelect.h"
 
 #define CC(code) LgiSwap32(code)
 
 struct int24_t
 {
 	int32_t s : 24;
 };
 
 union sample_t
 {
 	int8_t *i8;
 	int16_t *i16;
 	int24_t *i24;
 	int32_t *i32;
 	float *f;
 
 	sample_t(void *ptr = NULL)
 	{
 		*this = ptr;
 	}
 
 	sample_t &operator=(void *ptr)
 	{
 		i8 = (int8_t*)ptr;
 		return *this;
 	}
 };
 
 typedef int32_t (*ConvertFn)(sample_t &ptr);
 
 class LAudioView : public LLayout
 {
 public:
 	enum LFileType
 	{
 		AudioUnknown,
 		AudioRaw,
 		AudioWav,
 	};
 	enum LSampleType
 	{
 		AudioS8,
 		AudioS16LE,
 		AudioS16BE,
 		AudioS24LE,
 		AudioS24BE,
 		AudioS32LE,
 		AudioS32BE,
 		AudioFloat32,
 	};
 
 protected:
 	enum LCmds
 	{
 		IDC_COPY_CURSOR,
 		
 		IDC_LOAD_WAV,
 		IDC_LOAD_RAW,
 		IDC_SAVE_WAV,
 		IDC_SAVE_RAW,
 		
 		IDC_DRAW_AUTO,
 		IDC_DRAW_LINE,
 		IDC_SCAN_SAMPLES,
 		IDC_SCAN_GROUPS,
 		
 		IDC_44K,
 		IDC_48K,
 		IDC_88K,
 		IDC_96K,
 		
 		IDC_MONO,
 		IDC_STEREO,
 		IDC_2pt1_CHANNELS,
 		IDC_5pt1_CHANNELS,
 	};
 	enum LDrawMode
 	{
 		DrawAutoSelect,
 		DrawSamples,
 		ScanSamples,
 		ScanGroups,
 	};
 
 	LArray<int8_t> Audio;
 	LFileType Type = AudioUnknown;
 	LSampleType SampleType = AudioS16LE;
 	int SampleBits = 0;
 	int SampleRate = 0;
 	int Channels = 0;
 	size_t DataStart = 0;
 	size_t CursorSample = 0;
 	LRect Data;
 	LArray<LRect> ChData;
 	double XZoom = 1.0;
 	LString Msg, ErrorMsg;
 	LDrawMode DrawMode = DrawAutoSelect;
 
 	template<typename T>
 	struct Grp
 	{
 		T Min = 0, Max = 0;
 	};
 
 	LArray<LArray<Grp<int32_t>>> IntGrps;
 	LArray<LArray<Grp<float>>> FloatGrps;
 
-	LArray<LArray<void*>> PixelAddr;
-
 	void MouseToCursor(LMouse &m)
 	{
 		auto idx = ViewToSample(m.x);
 		if (idx != CursorSample)
 		{
 			CursorSample = idx;
 			UpdateMsg();
 			Invalidate();
 		}
 	}
 
 	void SetData(LRect &r)
 	{
 		Data = r;
 		ChData.Length(Channels);
 
 		int Dy = Data.Y() - 1;
 		for (int i=0; i<Channels; i++)
 		{
 			auto &r = ChData[i];
 			r = Data;
 			r.y1 = Data.y1 + (i * Dy / Channels);
 			r.y2 = Data.y1 + ((i + 1) * Dy / Channels) - 1;
 		}
 	}
 
 public:
 	LColour cGrid, cMax, cMin, cCursorMin, cCursorMax;
 
 	LAudioView(const char *file = NULL)
 	{
 		cGrid.Rgb(200, 200, 200);
 		cMax = LColour::Blue;
 		cMin = cMax.Mix(cGrid);
 		cCursorMax = LColour::Red;
 		cCursorMin = cCursorMax.Mix(cGrid);
 
 		Empty();
 		if (file)
 			Load(file);
 	}
 
 	~LAudioView()
 	{
+		Empty();
 	}
 
 	bool Empty()
 	{
-		Audio.Length(0);
+		Audio.Free();
+		
 		Type = AudioUnknown;
 		SampleType = AudioS16LE;
 		SampleRate = 0;
 		SampleBits = 0;
 		DataStart = 0;
 		Channels = 0;
 		CursorSample = 0;
 		Data.ZOff(-1, -1);
 
 		return false;
 	}
 
 	bool Load(const char *FileName, int rate = 0, int bitDepth = 0, int channels = 0)
 	{
 		LFile f(FileName, O_READ);
 		if (!f.IsOpen())
 		{
 			ErrorMsg.Printf("Can't open '%s' for reading.", FileName);
 			return false;
 		}
 		
 		if (!Audio.Length(f.GetSize()))
 		{
 			ErrorMsg.Printf("Can't allocate %s.", LFormatSize(f.GetSize()).Get());
 			return Empty();
 		}
 
 		auto rd = f.Read(Audio.AddressOf(), f.GetSize());
 		if (rd > 0 && rd != f.GetSize())
 			Audio.Length(rd);
 
 		auto Ext = LGetExtension(FileName);
 		if (!Stricmp(Ext, "wav"))
 			Type = AudioWav;
 		else if (!Stricmp(Ext, "raw"))
 			Type = AudioRaw;
 		else
 		{
 			ErrorMsg.Printf("Unknown format: %s", Ext);
 			return Empty();
 		}
 			
 		if (rate)
 			SampleRate = rate;
 
 		DataStart = 0;
 		SampleBits = bitDepth;
 		Channels = channels;
 		if (bitDepth == 16)
 		{
 			SampleType = AudioS16LE;
 		}
 		else if (bitDepth == 32)
 		{
 			SampleType = AudioS32LE;
 		}
 		else if (Type == AudioWav)
 		{
 			// Parse the wave file...
 			LPointer p;
 			p.s8 = Audio.AddressOf();
 			auto end = p.s8 + Audio.Length();
 
 			if (*p.u32++ != CC('RIFF'))
 				return Empty();
 			auto ChunkSz = *p.u32++;
 			auto Fmt = *p.u32++;
 			
 			while (p.s8 < end)
 			{
 				auto SubChunkId = *p.u32++;
 				auto SubChunkSz = *p.u32++;
 				auto NextChunk = p.u8 + SubChunkSz;
 
 				if (SubChunkId == CC('fmt '))
 				{
 					auto AudioFmt = *p.u16++;
 					Channels = *p.u16++;
 					SampleRate = *p.u32++;
 					auto ByteRate = *p.u32++;
 					auto BlockAlign = *p.u16++;
 					SampleBits = *p.u16++;
 
 					if (SampleBits == 16)
 						SampleType = AudioS16LE;
 					else if (SampleBits == 24)
 						SampleType = AudioS24LE;
 					else if (SampleBits == 32)
 						SampleType = AudioS32LE;
+
+					printf("Channels=%i\n", Channels);
+					printf("SampleRate=%i\n", SampleRate);
+					printf("SampleBits=%i\n", SampleBits);
 				}
 				else if (SubChunkId == CC('data'))
 				{
 					DataStart = p.s8 - Audio.AddressOf();
+					
+					printf("DataStart=" LPrintfSizeT "\n", DataStart);
 					break;
 				}
 				
 				p.u8 = NextChunk;
 			}
 
 			if (!DataStart)
 			{
 				ErrorMsg = "No 'data' element found.";
 				return Empty();
 			}
 		}
 		else if (Type == AudioRaw)
 		{
 			// Assume 32bit
 			SampleType = AudioS32LE;
 			SampleBits = 32;
 		}
 
 		if (!SampleRate)
 			SampleRate = 44100;
 		if (!Channels)
 			Channels = 2;
 
 		Invalidate();
 		return true;
 	}
 
 	LRect DefaultPos()
 	{
 		auto c = GetClient();
 		c.Inset(20, 20);
 		return c;
 	}
 
 	size_t GetSamples()
 	{
 		return (Audio.Length() - DataStart) / (SampleBits >> 3) / Channels;
 	}
 
 	int SampleToView(size_t idx)
 	{
 		return Data.x1 + (int)((idx * Data.X()) / GetSamples());
 	}
 
 	size_t ViewToSample(int x /*px*/)
 	{
 		int offset = x - Data.x1;
 		ssize_t samples = GetSamples();
 		ssize_t idx = offset * samples / Data.X();
 		if (idx < 0)
 			idx = 0;
 		else if (idx >= samples)
 			idx = samples - 1;
 		return idx;
 	}
 
 	void OnPosChange()
 	{
 		auto def = DefaultPos();
 		LRect d = Data;
 		d.y1 = def.y1;
 		d.y2 = def.y2;
 		SetData(d);
 	}
 
 	#define CheckItem(Sub, Name, Id, Chk) \
 	{ \
 		auto item = Sub->AppendItem(Name, Id); \
 		if (item && Chk) item->Checked(true); \
 	}
 
 	void OnMouseClick(LMouse &m)
 	{
 		if (m.IsContextMenu())
 		{
 			LSubMenu s;
 			s.AppendItem("Copy Cursor Address", IDC_COPY_CURSOR);
 			s.AppendSeparator();
 
 			auto File = s.AppendSub("File");
 			File->AppendItem("Load Wav", IDC_LOAD_WAV);
 			File->AppendItem("Load Raw", IDC_LOAD_RAW);
 			File->AppendItem("Save Wav", IDC_SAVE_WAV);
 			File->AppendItem("Save Raw", IDC_SAVE_RAW);
 
 			auto Draw = s.AppendSub("Draw Mode");
 			CheckItem(Draw, "Auto", IDC_DRAW_AUTO, DrawMode == DrawAutoSelect);
 			CheckItem(Draw, "Line", IDC_DRAW_LINE, DrawMode == DrawSamples);
 			CheckItem(Draw, "Scan Samples", IDC_SCAN_SAMPLES, DrawMode == ScanSamples);
 			CheckItem(Draw, "Scan Groups", IDC_SCAN_GROUPS, DrawMode == ScanGroups);
 
 			auto Rate = s.AppendSub("Sample Rate");
 			CheckItem(Rate, "44.1k", IDC_44K, SampleRate == 44100);
 			CheckItem(Rate, "48k", IDC_48K, SampleRate == 4800);
 			CheckItem(Rate, "88.2k", IDC_88K, SampleRate == 44100*2);
 			CheckItem(Rate, "96k", IDC_96K, SampleRate == 48000*2);
 
 			auto Ch = s.AppendSub("Channels");
 			CheckItem(Ch, "Mono", IDC_MONO, Channels == 1);
 			CheckItem(Ch, "Stereo", IDC_STEREO, Channels == 2);
 			CheckItem(Ch, "2.1", IDC_2pt1_CHANNELS, Channels == 3);
 			CheckItem(Ch, "5.1", IDC_5pt1_CHANNELS, Channels == 6);
 
 			bool Update = false;
 			switch (s.Float(this, m))
 			{
 				case IDC_COPY_CURSOR:
 				{
 					LClipBoard clip(this);
 					size_t addrVal = DataStart + (CursorSample * Channels * SampleBits / 8);
 					LString addr;
 					addr.Printf(LPrintfSizeT, addrVal);
 					clip.Text(addr);
 					break;
 				}
 				case IDC_SAVE_RAW:
 				{
 					auto s = new LFileSelect;
 					s->Parent(this);
 					s->Save([this](auto s, auto ok)
 					{
 						if (ok)
 						{
 							LFile out(s->Name(), O_WRITE);
 							if (out)
 							{
 								out.SetSize(0);
 
 								auto ptr = Audio.AddressOf(DataStart);
 								out.Write(ptr, Audio.Length() - DataStart);
 							}
 							else
 								LgiMsg(this, "Can't open '%s' for writing.", "Error", MB_OK, s->Name());
 						}
 						delete s;
 					});
 					break;
 				}
 				case IDC_DRAW_AUTO:
 					DrawMode = DrawAutoSelect;
 					Update = true;
 					break;
 				case IDC_DRAW_LINE:
 					DrawMode = DrawSamples;
 					Update = true;
 					break;
 				case IDC_SCAN_SAMPLES:
 					DrawMode = ScanSamples;
 					Update = true;
 					break;
 				case IDC_SCAN_GROUPS:
 					DrawMode = ScanGroups;
 					Update = true;
 					break;
 				case IDC_44K:
 					SampleRate = 44100;
 					Update = true;
 					break;
 				case IDC_48K:
 					SampleRate = 48000;
 					Update = true;
 					break;
 				case IDC_88K:
 					SampleRate = 44100*2;
 					Update = true;
 					break;
 				case IDC_96K:
 					SampleRate = 48000*2;
 					Update = true;
 					break;
 				case IDC_MONO:
 					Channels = 1;
 					Update = true;
 					break;
 				case IDC_STEREO:
 					Channels = 2;
 					Update = true;
 					break;
 				case IDC_2pt1_CHANNELS:
 					Channels = 3;
 					Update = true;
 					break;
 				case IDC_5pt1_CHANNELS:
 					Channels = 6;
 					Update = true;
 					break;
 				default:
 					break;
 			}
 
 			if (Update)
 			{
 				IntGrps.Length(0);
 				FloatGrps.Length(0);
 				SetData(Data);
 				Invalidate();
 			}
 		}
 		else if (m.Left())
 		{
 			Focus(true);
 			MouseToCursor(m);
 		}
 	}
 
 	void OnMouseMove(LMouse &m)
 	{
 		if (m.Down())
 			MouseToCursor(m);
 	}
 
 	LPointer AddressOf(size_t Sample)
 	{
 		LPointer p;
 		int SampleBytes = SampleBits >> 3;
 		p.s8 = Audio.AddressOf(DataStart + (Sample * Channels * SampleBytes));
 		return p;
 	}
 
 	void UpdateMsg()
 	{
 		ssize_t Samples = GetSamples();
 		auto Addr = AddressOf(CursorSample);
 		size_t AddrOffset = Addr.s8 - Audio.AddressOf();
 		LString::Array Val;
 		size_t GraphLen = 0;
 		for (int ch=0; ch<Channels; ch++)
 		{
 			/*
 			switch (SampleType)
 			{
 				case AudioS16LE:
 				case AudioS16BE:
 					Val.New().Printf("%i", Native(Addr.s16[ch]));
 					GraphLen = Int16Grps.Length() ? Int16Grps[0].Length() : 0;
 					break;
 				case AudioS32LE:
 				case AudioS32BE:
 					Val.New().Printf("%i", Native(Addr.s32[ch]));
 					GraphLen = Int32Grps.Length() ? Int32Grps[0].Length() : 0;
 					break;
 			}
 			*/
 		}
 
 		Msg.Printf("Channels=%i SampleRate=%i BitDepth=%i XZoom=%g Samples=" LPrintfSSizeT " Cursor=" LPrintfSizeT " @ " LPrintfSizeT " (%s) Graph=" LPrintfSizeT "\n",
 			Channels, SampleRate, SampleBits,
 			XZoom, Samples, CursorSample, AddrOffset, LString(",").Join(Val).Get(), GraphLen);
 	}
 
 	bool OnMouseWheel(double Lines)
 	{
 		LMouse m;
 		GetMouse(m);
 
 		ssize_t Samples = GetSamples();
 		if (m.System() && m.Alt())
 		{
 			auto DefPos = DefaultPos();
 			auto change = (double)Lines / 3;
 			XZoom *= 1.0 + (-change / 10);
 
 			int OldX = Data.X();
 			int x = (int)(DefPos.X() * XZoom);
 			int CursorX = SampleToView(CursorSample);
 			LRect d = Data;
 			d.x1 = (int) (CursorX - (CursorSample * x / Samples));
 			d.x2 = d.x1 + x - 1;
 			SetData(d);
 
 			Invalidate();
 		}
 		else
 		{
 			int change = (int)(Lines * -6);
 			LRect d = Data;
 			d.x1 += change;
 			d.x2 += change;
 			SetData(d);
 
 			Invalidate();
 		}
 
 		UpdateMsg();
 
 		return true;
 	}
 
 	#define PROFILE_PAINT_SAMPLES 0
 	#if PROFILE_PAINT_SAMPLES
 		#define PROF(name) Prof.Add(name)
 	#else
 		#define PROF(name)
 	#endif
 
 	ConvertFn GetConvert()
 	{
 		switch (SampleType)
 		{
 			case AudioS8:
 				return [](sample_t &s) -> int32_t
 				{
 					return *s.i8++;
 				};
 			case AudioS16LE:
 				return [](sample_t &s) -> int32_t
 				{					
 					return *s.i16++;
 				};
 			case AudioS16BE:
 				return [](sample_t &s) -> int32_t
 				{
 					int16_t i = LgiSwap16(*s.i16);
 					s.i16++;
 					return i;
 				};
 			case AudioS24LE:
 				return [](sample_t &s) -> int32_t
 				{
 					int32_t i = s.i24->s;
 					s.i8 += 3;
 					return i;
 				};
 			case AudioS24BE:
 				return [](sample_t &s) -> int32_t
 				{
 					int24_t i;
 					int8_t *p = (int8_t*)&i;
 					p[0] = s.i8[2];
 					p[1] = s.i8[1];
 					p[2] = s.i8[0];
 					s.i8 += 3;
 					return i.s;
 				};
 			case AudioS32LE:
 				return [](sample_t &s) -> int32_t
 				{
 					return *s.i32++;
 				};
 			case AudioS32BE:
 				return [](sample_t &s) -> int32_t
 				{
 					int32_t i = *s.i32++;
 					return LgiSwap32(i);
 				};
 		}
 
 		return NULL;
 	}
 
 	void PaintSamples(LSurface *pDC, int ChannelIdx, LArray<LArray<Grp<int32_t>>> *Grps)
 	{
 		#if PROFILE_PAINT_SAMPLES
 		LProfile Prof("PaintSamples", 10);
 		#endif
 
 		int32_t MaxT = 0;
 		ConvertFn Convert = GetConvert();
 
 		if (SampleBits == 8)
 			MaxT = 0x7f;
 		else if (SampleBits == 16)
 			MaxT = 0x7fff;
 		else if (SampleBits == 24)
 			MaxT = 0x7fffff;
 		else
 			MaxT = 0x7fffffff;
 
-		auto sampleBytes = SampleBits / 8;
+		auto SampleBytes = SampleBits / 8;
 		auto Client = GetClient();
 		auto &c = ChData[ChannelIdx];
 		auto start = Audio.AddressOf(DataStart);
 		size_t samples = GetSamples();
+		printf("samples=" LPrintfSizeT "\n", samples);
 		auto end = start + (samples * Channels);
 		int cy = c.y1 + (c.Y() / 2);
 
 		pDC->Colour(cGrid);
 		pDC->Box(&c);
 
-		int blk = 64;
+		int blk = 256;
 		if (Grps->Length() == 0)
 		{
 			// Initialize the graph
 			PROF("GraphGen");
 			Grps->Length(Channels);
 			for (int ch = 0; ch < Channels; ch++)
 			{
 				auto &GraphArr = (*Grps)[ch];
 				GraphArr.SetFixedLength(false);
 				GraphArr.Length(0);
 
-				int BlkChannels = blk * Channels;
+				int BlkBytes = blk * Channels * SampleBytes;
+				printf("BlkBytes=%i\n", BlkBytes);
+				
 				size_t BlkIndex = 0;
-				int byteOffsetToSample = ch * (SampleRate >> 3);
+				int byteOffsetToSample = ch * SampleBytes;
+				printf("byteOffsetToSample=%i\n", byteOffsetToSample);
+				printf("SampleBytes=%i\n", SampleBytes);
+
 				sample_t s;
 				s.i8 = start+byteOffsetToSample;
 
 				// For each block...
-				for (; s.i8 < end; s.i8 += BlkChannels)
+				for (; s.i8 < end; s.i8 += BlkBytes)
 				{
-					int remain = MIN( (int)(end - s.i8), BlkChannels );
+					int remain = MIN( (int)(end - s.i8), BlkBytes );
 					auto &b = GraphArr[BlkIndex++];
 
 					// For all samples in the block...
-					int8_t *blkEnd = s.i8 + (remain * sampleBytes);
-					b.Min = b.Max = Convert(s); // init min/max with first sample
-					while (s.i8 < blkEnd)
+					int8_t *blkEnd = s.i8 + (remain * SampleBytes);
+					auto smp = s;
+					b.Min = b.Max = Convert(smp); // init min/max with first sample
+					while (smp.i8 < blkEnd)
 					{
-						auto n = Convert(s);
+						auto n = Convert(smp);
 						if (n < b.Min)
 							b.Min = n;
 						if (n > b.Max)
 							b.Max = n;
 					}
+					
+					/*
+					printf("bucket=%i %i-%i\n", (int)BlkIndex-1, b.Min, b.Max);
+					if (BlkIndex > 100)
+						return;
+					*/
 				}
 
 				GraphArr.SetFixedLength(true);
 			}
 		}
 
 		PROF("PrePaint");
 
 		int YScale = c.Y() / 2;
 		int CursorX = SampleToView(CursorSample);
 		double blkScale = Grps->Length() > 0 ? (double) (*Grps)[0].Length() / c.X() : 1.0;
+		printf("blkScale=%f blks/px\n", blkScale);
 		LDrawMode EffectiveMode = DrawMode;
 		auto StartSample = ViewToSample(Client.x1);
 		auto EndSample = ViewToSample(Client.x2);
 		auto SampleRange = EndSample - StartSample;
 
 		if (EffectiveMode == DrawAutoSelect)
 		{
 			if (SampleRange < (Client.X() << 2))
 				EffectiveMode = DrawSamples;
 			else if (blkScale < 1.0)
 				EffectiveMode = ScanSamples;
 			else
 				EffectiveMode = ScanGroups;
 		}
 	
 		// LgiTrace("DrawRange: " LPrintfSizeT "->" LPrintfSizeT " (" LPrintfSizeT ") mode=%i\n", StartSample, EndSample, SampleRange, (int)EffectiveMode);
 		if (EffectiveMode == DrawSamples)
 		{
 			sample_t pSample;
 			pSample.i8 = start + (StartSample * Channels) + ChannelIdx;
 
 			if (CursorX >= Client.x1 && CursorX <= Client.x2)
 			{
 				pDC->Colour(L_BLACK);
 				pDC->VLine(CursorX, c.y1, c.y2);
 			}
 			pDC->Colour(cGrid);
 			pDC->HLine(c.x1, c.x2, cy);
 
 			// LgiTrace("	ptr=%i\n", (int)((char*)pSample-(char*)start));
 
 			// For all samples in the view space...
 			pDC->Colour(cMax);
 			LPoint Prev(-1, -1);
 			for (auto idx = StartSample; idx <= EndSample + 1; idx++, pSample.i8 += Channels)
 			{
 				auto n = Convert(pSample);
 				auto x = SampleToView(idx);
 				auto y = (uint32_t) (cy - ((uint64_t)n * YScale / MaxT));
 				if (idx != StartSample)
 					pDC->Line(Prev.x, Prev.y, (int)x, (int)y);
 				Prev.Set((int)x, (int)y);
 			}
 		}
 		else
 		{
 			// For all x coordinates in the view space..
 			for (int Vx=Client.x1; Vx<=Client.x2; Vx++)
 			{
 				if (Vx % 100 == 0)
 				{
 					PROF("Pixels");
 				}
 
 				if (Vx < c.x1 || Vx > c.x2)
 					continue;
 
 				auto isCursor = CursorX == Vx;
 				if (isCursor)
 				{
 					pDC->Colour(L_BLACK);
 					pDC->VLine(Vx, c.y1, c.y2);
 				}
 
 				Grp<int32_t> Min, Max;
 				StartSample = ViewToSample(Vx);
-				EndSample = ViewToSample(Vx+1);
+				EndSample = ViewToSample(Vx+1);				
+				// printf("SampleIdx: " LPrintfSizeT "-" LPrintfSizeT "\n", StartSample, EndSample);
+				
 				if (EffectiveMode == ScanSamples)
 				{
 					// Scan individual samples
 					sample_t pStart;
 					pStart.i8 = start + (StartSample * Channels) + ChannelIdx;
 					auto pEnd = start + (EndSample * Channels) + ChannelIdx;
 
 					#if 0
 					if (Vx==Client.x1)
 					{
 						auto PosX = SampleToView((pStart - ChannelIdx - start) / Channels);
 						LgiTrace("	ptr=%i " LPrintfSizeT "-" LPrintfSizeT " x=%i pos=%i\n", (int)((char*)pStart-(char*)start), StartSample, EndSample, Vx, PosX);
 					}
 					#endif
 					
 					for (auto i = pStart; i.i8 < pEnd; i.i8 += Channels)
 					{
 						auto n = Convert(i);
 						Min.Min = MIN(Min.Min, n);
 						Max.Max = MAX(Max.Max, n);
 					}
 				}
 				else
 				{
 					// Scan the buckets
 					auto &Graph = (*Grps)[ChannelIdx];
 					double blkStart = (double)StartSample * Graph.Length() / samples;
 					double blkEnd = (double)EndSample * Graph.Length() / samples;
+					if (Vx % 10 == 0)
+						printf("BlkRange[%i]: %g-%g of:%i\n", Vx, blkStart, blkEnd, (int)Graph.Length());
 				
 					#if 0
 					if (isCursor)
 						LgiTrace("Blk %g-%g of " LPrintfSizeT "\n", blkStart, blkEnd, Graph.Length());
 					#endif
 
-					for (int i=(int)floor(blkStart); i<(int)ceil(blkEnd); i++)
+					auto iEnd = (int)ceil(blkEnd);
+					int count = 0;
+					for (int i=(int)floor(blkStart); i<iEnd; i++, count++)
 					{
 						auto &b = Graph[i];
-						Min.Min = MIN(Min.Min, b.Min);
-						Min.Max = MAX(Min.Max, b.Min);
-						Max.Min = MIN(Max.Min, b.Max);
+						Min.Min += b.Min;
+						Min.Max += b.Max;
+						Max.Min = MIN(Max.Min, b.Min);
 						Max.Max = MAX(Max.Max, b.Max);
 					}
+					if (count)
+					{
+						Min.Min /= count;
+						Min.Max /= count;
+					}
 				}
 			
-				auto y1 = (cy - (Min.Min * YScale / MaxT));
+				auto y1 = (cy - (Max.Min * YScale / MaxT));
 				auto y2 = (cy - (Max.Max * YScale / MaxT));
+				/*
+				printf("y=%i,%i r=%i,%i scale=%i max=%i\n",
+					(int)y1, (int)y2,
+					Min.Min, Min.Max,
+					YScale, MaxT);
+				*/
 				pDC->Colour(isCursor ? cCursorMax : cMax);
 				pDC->VLine(Vx, (int)y1, (int)y2);
 
 				if (EffectiveMode == ScanGroups)
 				{
 					y1 = (cy - (Min.Max * YScale / MaxT));
-					y2 = (cy - (Max.Min * YScale / MaxT));
+					y2 = (cy - (Min.Min * YScale / MaxT));
 					pDC->Colour(isCursor ? cCursorMin : cMin);
 					pDC->VLine(Vx, (int)y1, (int)y2);
 				}
 			}
 		}
 	}
 
 	void OnPaint(LSurface *pDC)
 	{
 		#ifdef WINDOWS
 		LDoubleBuffer DblBuf(pDC);
 		#endif
 		pDC->Colour(L_WORKSPACE);
 		pDC->Rectangle();
 
 		if (!Data.Valid())
 		{
 			auto r = DefaultPos();
 			SetData(r);
 		}
 
 		auto Fnt = GetFont();
 		LDisplayString ds(Fnt, ErrorMsg ? ErrorMsg : Msg);
 		Fnt->Transparent(true);
 		Fnt->Fore(ErrorMsg ? LColour::Red : LColour(L_LOW));
 		ds.Draw(pDC, 4, 4);
 		if (ErrorMsg)
 			return;
 
 		switch (SampleType)
 		{
 			case AudioS16LE:
 			case AudioS16BE:
 			{
 				for (int ch = 0; ch < Channels; ch++)
 					PaintSamples(pDC, ch, &IntGrps);
 				break;
 			}
 			case AudioS24LE:
 			case AudioS24BE:
 			{
 				for (int ch = 0; ch < Channels; ch++)
 					PaintSamples(pDC, ch, &IntGrps);
 				break;
 			}
 			case AudioS32LE:
 			case AudioS32BE:
 			{
 				for (int ch = 0; ch < Channels; ch++)
 					PaintSamples(pDC, ch, &IntGrps);
 				break;
 			}
 			case AudioFloat32:
 			{
 				/*
 				for (int ch = 0; ch < Channels; ch++)
 					PaintSamples(pDC, ch, &FloatGrps);
 				*/
 				break;
 			}
 		}
 	}
 
 	bool UnitTests()
 	{		
 		SampleType = AudioS16LE;
 		auto c = GetConvert();
 		int16_t le16 = (2 << 8) | (1);
 		sample_t ptr(&le16);
 		auto out = c(ptr);
 		if (out != 0x201)
 		{
 			LAssert(0);
 			return false;
 		}
 
 		SampleType = AudioS16BE;
 		c = GetConvert();
 		int16_t be16 = (1 << 8) | (2);
 		ptr = &be16;
 		out = c(ptr);
 		if (out != 0x201)
 		{
 			LAssert(0);
 			return false;
 		}
 
 		SampleType = AudioS24LE;
 		c = GetConvert();
 		uint8_t le24[] = {1, 2, 3};
 		ptr = &le24;
 		out = c(ptr);
 		if (out != 0x30201)
 		{
 			LAssert(0);
 			return false;
 		}
 
 		SampleType = AudioS24BE;
 		c = GetConvert();
 		uint8_t be24[] = {3, 2, 1};
 		ptr = &be24;
 		out = c(ptr);
 		if (out != 0x30201)
 		{
 			LAssert(0);
 			return false;
 		}
 
 		SampleType = AudioS32LE;
 		c = GetConvert();
 		uint8_t le32[] = {1, 2, 3, 4};
 		ptr = &le32;
 		out = c(ptr);
 		if (out != 0x4030201)
 		{
 			LAssert(0);
 			return false;
 		}
 
 		SampleType = AudioS32BE;
 		c = GetConvert();
 		uint8_t be32[] = {4, 3, 2, 1};
 		ptr = &be32;
 		out = c(ptr);
 		if (out != 0x4030201)
 		{
 			LAssert(0);
 			return false;
 		}
 
 		return true;
 	}
 };