diff --git a/aegisub/build/aegisub_vs2008/aegisub_vs2008.vcproj b/aegisub/build/aegisub_vs2008/aegisub_vs2008.vcproj
index c718375b2..3b392ac25 100644
--- a/aegisub/build/aegisub_vs2008/aegisub_vs2008.vcproj
+++ b/aegisub/build/aegisub_vs2008/aegisub_vs2008.vcproj
@@ -1763,6 +1763,10 @@
 				RelativePath="..\..\src\audio_renderer_waveform.h"
 				>
 			</File>
+			<File
+				RelativePath="..\..\src\audio_rendering_style.h"
+				>
+			</File>
 			<File
 				RelativePath="..\..\src\audio_timing_dialogue.cpp"
 				>
diff --git a/aegisub/src/audio_renderer.h b/aegisub/src/audio_renderer.h
index 2a8a31a01..9c63a91d9 100644
--- a/aegisub/src/audio_renderer.h
+++ b/aegisub/src/audio_renderer.h
@@ -35,6 +35,7 @@
 ///
 /// Base classes for audio renderers (spectrum, waveform, ...)
 
+#pragma once
 
 #ifndef AGI_PRE
 #include <memory>
@@ -44,6 +45,7 @@
 #include <wx/gdicmn.h>
 #endif
 
+#include "audio_rendering_style.h"
 #include "block_cache.h"
 
 // Some forward declarations for outside stuff
@@ -53,41 +55,6 @@ class AudioProvider;
 class AudioRendererBitmapProvider;
 class AudioRenderer;
 
-/// @brief Styles audio may be rendered in
-///
-/// The constants are ordered by priority:
-/// Selected has highest priority and should overlap active, which should
-/// overlap inactive, which should overlap normal regions.
-enum AudioRenderingStyle {
-	/// Regular audio with no special properties
-	AudioStyle_Normal,
-	/// Audio belonging to objects that can not be manipulated currently
-	AudioStyle_Inactive,
-	/// Audio that may be manipulated indirectly, usually part of selected lines
-	AudioStyle_Active,
-	/// Primary selection for work, usually coinciding with the primary playback range
-	AudioStyle_Selected,
-	/// Number of audio styles
-	AudioStyle_MAX
-};
-
-
-/// @class AudioRenderingStyleRanges
-/// @brief Abstract container for ranges of audio rendering styles
-///
-/// Interface for producers of audio rendering ranges, consumers should implement
-/// this interface for objects to pass to producers.
-class AudioRenderingStyleRanges {
-public:
-	/// @brief Add a range to the line
-	/// @param start First sample index in range
-	/// @param end   One past last sample index in range
-	/// @param style Style of the range added
-	virtual void AddRange(int64_t start, int64_t end, AudioRenderingStyle style) = 0;
-};
-
-
-
 /// @class AudioRendererBitmapCacheBitmapFactory
 /// @brief Produces wxBitmap objects for DataBlockCache storage for the audio renderer
 struct AudioRendererBitmapCacheBitmapFactory {
diff --git a/aegisub/src/audio_renderer_spectrum.cpp b/aegisub/src/audio_renderer_spectrum.cpp
index 020d634d7..99f18c88d 100644
--- a/aegisub/src/audio_renderer_spectrum.cpp
+++ b/aegisub/src/audio_renderer_spectrum.cpp
@@ -36,6 +36,18 @@
 
 #include "config.h"
 
+#include "audio_renderer_spectrum.h"
+
+#include "audio_colorscheme.h"
+#ifndef WITH_FFTW
+#include "fft.h"
+#endif
+#include "include/aegisub/audio_provider.h"
+#include "main.h"
+#include "utils.h"
+
+#include <libaegisub/log.h>
+
 #ifndef AGI_PRE
 #include <algorithm>
 
@@ -44,22 +56,6 @@
 #include <wx/dcmemory.h>
 #endif
 
-#include <libaegisub/log.h>
-
-#include "block_cache.h"
-#include "include/aegisub/audio_provider.h"
-#include "audio_colorscheme.h"
-#include "audio_renderer.h"
-#include "audio_renderer_spectrum.h"
-
-#ifdef WITH_FFTW
-#include <fftw3.h>
-#else
-#include "fft.h"
-#endif
-#include "main.h"
-#include "utils.h"
-
 /// Allocates blocks of derived data for the audio spectrum
 struct AudioSpectrumCacheBlockFactory {
 	/// Pointer back to the owning spectrum renderer
@@ -99,36 +95,31 @@ struct AudioSpectrumCacheBlockFactory {
 
 /// @brief Cache for audio spectrum frequency-power data
 class AudioSpectrumCache
-	: public DataBlockCache<float, 10, AudioSpectrumCacheBlockFactory> {
+: public DataBlockCache<float, 10, AudioSpectrumCacheBlockFactory> {
 public:
 	AudioSpectrumCache(size_t block_count, AudioSpectrumRenderer *renderer)
-		: DataBlockCache<float, 10, AudioSpectrumCacheBlockFactory>(
+	: DataBlockCache<float, 10, AudioSpectrumCacheBlockFactory>(
 			block_count, AudioSpectrumCacheBlockFactory(renderer))
 	{
 	}
 };
 
 
-
-
 AudioSpectrumRenderer::AudioSpectrumRenderer()
-: AudioRendererBitmapProvider()
-, cache(0)
-, colors_normal(12)
-, colors_selected(12)
+: colors_normal(new AudioColorScheme(12))
+, colors_selected(new AudioColorScheme(12))
+, colors_inactive(new AudioColorScheme(12))
 , derivation_size(8)
 , derivation_dist(8)
 #ifdef WITH_FFTW
 , dft_plan(0)
 , dft_input(0)
 , dft_output(0)
-#else
-, fft_scratch(0)
 #endif
-, audio_scratch(0)
 {
-	colors_normal.InitIcyBlue(AudioStyle_Normal);
-	colors_selected.InitIcyBlue(AudioStyle_Selected);
+	colors_normal->InitIcyBlue(AudioStyle_Normal);
+	colors_selected->InitIcyBlue(AudioStyle_Selected);
+	colors_inactive->InitIcyBlue(AudioStyle_Inactive);
 }
 
 AudioSpectrumRenderer::~AudioSpectrumRenderer()
@@ -138,14 +129,8 @@ AudioSpectrumRenderer::~AudioSpectrumRenderer()
 	RecreateCache();
 }
 
-
 void AudioSpectrumRenderer::RecreateCache()
 {
-	delete cache;
-	delete[] audio_scratch;
-	cache = 0;
-	audio_scratch = 0;
-
 #ifdef WITH_FFTW
 	if (dft_plan)
 	{
@@ -156,15 +141,12 @@ void AudioSpectrumRenderer::RecreateCache()
 		dft_input = 0;
 		dft_output = 0;
 	}
-#else
-	delete[] fft_scratch;
-	fft_scratch = 0;
 #endif
 
 	if (provider)
 	{
 		size_t block_count = (size_t)((provider->GetNumSamples() + (size_t)(1<<derivation_dist) - 1) >> derivation_dist);
-		cache = new AudioSpectrumCache(block_count, this);
+		cache.reset(new AudioSpectrumCache(block_count, this));
 
 #ifdef WITH_FFTW
 		dft_input = (double*)fftw_malloc(sizeof(double) * (2<<derivation_size));
@@ -179,19 +161,17 @@ void AudioSpectrumRenderer::RecreateCache()
 		// 2x for the input sample data
 		// 2x for the real part of the output
 		// 2x for the imaginary part of the output
-		fft_scratch = new float[6<<derivation_size];
+		fft_scratch.resize(6 << derivation_size);
 #endif
-		audio_scratch = new int16_t[2<<derivation_size];
+		audio_scratch.resize(2 << derivation_size);
 	}
 }
 
-
 void AudioSpectrumRenderer::OnSetProvider()
 {
 	RecreateCache();
 }
 
-
 void AudioSpectrumRenderer::SetResolution(size_t _derivation_size, size_t _derivation_dist)
 {
 	if (derivation_dist != _derivation_dist)
@@ -208,6 +188,13 @@ void AudioSpectrumRenderer::SetResolution(size_t _derivation_size, size_t _deriv
 	}
 }
 
+template<class T>
+void AudioSpectrumRenderer::ConvertToFloat(size_t count, T &dest) {
+	for (size_t si = 0; si < count; ++si)
+	{
+		dest[si] = (float)(audio_scratch[si]) / 32768.f;
+	}
+}
 
 void AudioSpectrumRenderer::FillBlock(size_t block_index, float *block)
 {
@@ -215,14 +202,10 @@ void AudioSpectrumRenderer::FillBlock(size_t block_index, float *block)
 	assert(block);
 
 	int64_t first_sample = ((int64_t)block_index) << derivation_dist;
-	provider->GetAudio(audio_scratch, first_sample, 2 << derivation_size);
+	provider->GetAudio(&audio_scratch[0], first_sample, 2 << derivation_size);
 
 #ifdef WITH_FFTW
-	// Convert audio data to float range [-1;+1)
-	for (size_t si = 0; si < (size_t)(2<<derivation_size); ++si)
-	{
-		dft_input[si] = (float)(audio_scratch[si]) / 32768.f;
-	}
+	ConvertToFloat(2 << derivation_size, dft_input);
 
 	fftw_execute(dft_plan);
 
@@ -235,16 +218,11 @@ void AudioSpectrumRenderer::FillBlock(size_t block_index, float *block)
 		o++;
 	}
 #else
-	float *fft_input = fft_scratch;
-	float *fft_real = fft_scratch + (2 << derivation_size);
-	float *fft_imag = fft_scratch + (4 << derivation_size);
+	ConvertToFloat(2 << derivation_size, fft_scratch);
 
-	// Convert audio data to float range [-1;+1)
-	for (size_t si = 0; si < (size_t)(2<<derivation_size); ++si)
-	{
-		fft_input[si] = (float)(audio_scratch[si]) / 32768.f;
-	}
-	fft_input = fft_scratch;
+	float *fft_input = &fft_scratch[0];
+	float *fft_real = &fft_scratch[0] + (2 << derivation_size);
+	float *fft_imag = &fft_scratch[0] + (4 << derivation_size);
 
 	FFT fft;
 	fft.Transform(2<<derivation_size, fft_input, fft_real, fft_imag);
@@ -262,7 +240,6 @@ void AudioSpectrumRenderer::FillBlock(size_t block_index, float *block)
 #endif
 }
 
-
 void AudioSpectrumRenderer::Render(wxBitmap &bmp, int start, AudioRenderingStyle style)
 {
 	if (!cache)
@@ -283,7 +260,7 @@ void AudioSpectrumRenderer::Render(wxBitmap &bmp, int start, AudioRenderingStyle
 	ptrdiff_t stride = img.GetWidth()*3;
 	int imgheight = img.GetHeight();
 
-	AudioColorScheme *pal = style == AudioStyle_Selected ? &colors_selected : &colors_normal;
+	const AudioColorScheme *pal = GetColorScheme(style);
 
 	/// @todo Make minband and maxband configurable
 	int minband = 0;
@@ -339,24 +316,26 @@ void AudioSpectrumRenderer::Render(wxBitmap &bmp, int start, AudioRenderingStyle
 	targetdc.DrawBitmap(tmpbmp, 0, 0);
 }
 
-
 void AudioSpectrumRenderer::RenderBlank(wxDC &dc, const wxRect &rect, AudioRenderingStyle style)
 {
 	// Get the colour of silence
-	AudioColorScheme *pal = style == AudioStyle_Selected ? &colors_selected : &colors_normal;
-	unsigned char color_raw[4];
-	pal->map(0.0, color_raw);
-	wxColour col(color_raw[0], color_raw[1], color_raw[2]);
-
+	wxColour col = GetColorScheme(style)->get(0.0f);
 	dc.SetBrush(wxBrush(col));
 	dc.SetPen(wxPen(col));
 	dc.DrawRectangle(rect);
 }
 
-
 void AudioSpectrumRenderer::AgeCache(size_t max_size)
 {
 	if (cache)
 		cache->Age(max_size);
 }
-
+const AudioColorScheme *AudioSpectrumRenderer::GetColorScheme(AudioRenderingStyle style) const
+{
+	switch (style)
+	{
+		case AudioStyle_Selected: return colors_selected.get();
+		case AudioStyle_Inactive: return colors_inactive.get();
+		default: return colors_normal.get();
+	}
+}
diff --git a/aegisub/src/audio_renderer_spectrum.h b/aegisub/src/audio_renderer_spectrum.h
index ba6722a1c..93bfd3b5a 100644
--- a/aegisub/src/audio_renderer_spectrum.h
+++ b/aegisub/src/audio_renderer_spectrum.h
@@ -37,21 +37,21 @@
 
 #ifndef AGI_PRE
 #include <stdint.h>
+#include <vector>
 #endif
 
+#include "audio_renderer.h"
+
+#include <libaegisub/scoped_ptr.h>
+
 #ifdef WITH_FFTW
 #include <fftw3.h>
 #endif
 
-
-
-// Specified and implemented in cpp file, to avoid pulling in too much
-// complex template code in this header.
+class AudioColorScheme;
 class AudioSpectrumCache;
 struct AudioSpectrumCacheBlockFactory;
 
-
-
 /// @class AudioSpectrumRenderer
 /// @brief Render frequency-power spectrum graphs for audio data.
 ///
@@ -61,13 +61,16 @@ class AudioSpectrumRenderer : public AudioRendererBitmapProvider {
 	friend struct AudioSpectrumCacheBlockFactory;
 
 	/// Internal cache management for the spectrum
-	AudioSpectrumCache *cache;
+	agi::scoped_ptr<AudioSpectrumCache> cache;
 
 	/// Colour table used for regular rendering
-	AudioColorScheme colors_normal;
+	agi::scoped_ptr<AudioColorScheme> colors_normal;
 
 	/// Colour table used for rendering the audio selection
-	AudioColorScheme colors_selected;
+	agi::scoped_ptr<AudioColorScheme> colors_selected;
+
+	/// Colour table used for rendering inactive lines
+	agi::scoped_ptr<AudioColorScheme> colors_inactive;
 
 	/// Binary logarithm of number of samples to use in deriving frequency-power data
 	size_t derivation_size;
@@ -84,7 +87,7 @@ class AudioSpectrumRenderer : public AudioRendererBitmapProvider {
 	/// @brief Recreates the cache
 	///
 	/// To be called when the number of blocks in cache might have changed,
-	// eg. new audio provider or new resolution.
+	/// e.g. new audio provider or new resolution.
 	void RecreateCache();
 
 	/// @brief Fill a block with frequency-power data for a time range
@@ -92,6 +95,12 @@ class AudioSpectrumRenderer : public AudioRendererBitmapProvider {
 	/// @param[out] block       Address to write the data to
 	void FillBlock(size_t block_index, float *block);
 
+	/// @brief Convert audio data to float range [-1;+1)
+	/// @param count Samples to convert
+	/// @param dest Buffer to fill
+	template<class T>
+	void ConvertToFloat(size_t count, T &dest);
+
 #ifdef WITH_FFTW
 	/// FFTW plan data
 	fftw_plan dft_plan;
@@ -101,21 +110,24 @@ class AudioSpectrumRenderer : public AudioRendererBitmapProvider {
 	fftw_complex *dft_output;
 #else
 	/// Pre-allocated scratch area for doing FFT derivations
-	float *fft_scratch;
+	std::vector<float> fft_scratch;
 #endif
 
 	/// Pre-allocated scratch area for storing raw audio data
-	int16_t *audio_scratch;
+	std::vector<int16_t> audio_scratch;
+
+	/// Get the color scheme for a rendering style
+	const AudioColorScheme *GetColorScheme(AudioRenderingStyle style) const;
 
 public:
 	/// @brief Constructor
 	AudioSpectrumRenderer();
 
 	/// @brief Destructor
-	virtual ~AudioSpectrumRenderer();
+	~AudioSpectrumRenderer();
 
 	/// @brief Render a range of audio spectrum
-	/// @param bmp   [in,out] Bitmap to render into, also carries lenght information
+	/// @param bmp   [in,out] Bitmap to render into, also carries length information
 	/// @param start First column of pixel data in display to render
 	/// @param style Style to render audio in
 	void Render(wxBitmap &bmp, int start, AudioRenderingStyle style);
diff --git a/aegisub/src/audio_renderer_waveform.cpp b/aegisub/src/audio_renderer_waveform.cpp
index bdc944ae3..3df7facd7 100644
--- a/aegisub/src/audio_renderer_waveform.cpp
+++ b/aegisub/src/audio_renderer_waveform.cpp
@@ -53,10 +53,12 @@ AudioWaveformRenderer::AudioWaveformRenderer()
 : AudioRendererBitmapProvider()
 , colors_normal(6)
 , colors_selected(6)
+, colors_inactive(6)
 , audio_buffer(0)
 {
-	colors_normal.InitIcyBlue_Normal();
-	colors_selected.InitIcyBlue_Selected();
+	colors_normal.InitIcyBlue(AudioStyle_Normal);
+	colors_selected.InitIcyBlue(AudioStyle_Selected);
+	colors_inactive.InitIcyBlue(AudioStyle_Inactive);
 }
 
 
@@ -72,7 +74,7 @@ void AudioWaveformRenderer::Render(wxBitmap &bmp, int start, AudioRenderingStyle
 	wxRect rect(wxPoint(0, 0), bmp.GetSize());
 	int midpoint = rect.height / 2;
 
-	AudioColorScheme *pal = style == AudioStyle_Selected ? &colors_selected : &colors_normal;
+	const AudioColorScheme *pal = GetColorScheme(style);
 
 	// Fill the background
 	dc.SetBrush(wxBrush(pal->get(0.0f)));
@@ -137,8 +139,7 @@ void AudioWaveformRenderer::Render(wxBitmap &bmp, int start, AudioRenderingStyle
 
 void AudioWaveformRenderer::RenderBlank(wxDC &dc, const wxRect &rect, AudioRenderingStyle style)
 {
-	AudioColorScheme *pal = style == AudioStyle_Selected ? &colors_selected : &colors_normal;
-
+	const AudioColorScheme *pal = GetColorScheme(style);
 	wxColor line(pal->get(1.0));
 	wxColor bg(pal->get(0.0));
 
@@ -155,19 +156,24 @@ void AudioWaveformRenderer::RenderBlank(wxDC &dc, const wxRect &rect, AudioRende
 	dc.DrawLine(rect.x, rect.y+halfheight, rect.x+rect.width, rect.y+halfheight);
 }
 
-
-
 void AudioWaveformRenderer::OnSetProvider()
 {
 	delete[] audio_buffer;
 	audio_buffer = 0;
 }
 
-
 void AudioWaveformRenderer::OnSetSamplesPerPixel()
 {
 	delete[] audio_buffer;
 	audio_buffer = 0;
 }
 
-
+const AudioColorScheme *AudioWaveformRenderer::GetColorScheme(AudioRenderingStyle style) const
+{
+	switch (style)
+	{
+		case AudioStyle_Selected: return &colors_selected;
+		case AudioStyle_Inactive: return &colors_inactive;
+		default: return &colors_normal;
+	}
+}
diff --git a/aegisub/src/audio_renderer_waveform.h b/aegisub/src/audio_renderer_waveform.h
index 7b7cc24e0..6d91ce533 100644
--- a/aegisub/src/audio_renderer_waveform.h
+++ b/aegisub/src/audio_renderer_waveform.h
@@ -35,9 +35,9 @@
 ///
 /// Render a waveform display of PCM audio data
 
+#ifndef AGI_PRE
 #include <stdint.h>
-
-
+#endif
 
 class AudioWaveformRenderer : public AudioRendererBitmapProvider {
 	/// Colour table used for regular rendering
@@ -46,22 +46,27 @@ class AudioWaveformRenderer : public AudioRendererBitmapProvider {
 	/// Colour table used for rendering the audio selection
 	AudioColorScheme colors_selected;
 
+	/// Colour table used for rendering inactive lines
+	AudioColorScheme colors_inactive;
+
 	/// Pre-allocated buffer for audio fetched from provider
 	char *audio_buffer;
 
-protected:
-	virtual void OnSetProvider();
-	virtual void OnSetSamplesPerPixel();
+	/// Get the color scheme for a rendering style
+	const AudioColorScheme *GetColorScheme(AudioRenderingStyle style) const;
+
+	void OnSetProvider();
+	void OnSetSamplesPerPixel();
 
 public:
 	/// @brief Constructor
 	AudioWaveformRenderer();
 
 	/// @brief Destructor
-	virtual ~AudioWaveformRenderer();
+	~AudioWaveformRenderer();
 
 	/// @brief Render a range of audio waveform
-	/// @param bmp   [in,out] Bitmap to render into, also carries lenght information
+	/// @param bmp   [in,out] Bitmap to render into, also carries length information
 	/// @param start First column of pixel data in display to render
 	/// @param style Style to render audio in
 	void Render(wxBitmap &bmp, int start, AudioRenderingStyle style);