diff --git a/aegisub/src/audio_provider.cpp b/aegisub/src/audio_provider.cpp
index 62d123ac7..0d8ce5518 100644
--- a/aegisub/src/audio_provider.cpp
+++ b/aegisub/src/audio_provider.cpp
@@ -56,17 +56,6 @@
 #include "frame_main.h"
 #include "main.h"
 
-/// @brief Constructor 
-///
-AudioProvider::AudioProvider() : raw(NULL) {
-}
-
-/// @brief Destructor 
-///
-AudioProvider::~AudioProvider() {
-	delete[] raw;
-}
-
 /// @brief Get audio with volume 
 /// @param buf    
 /// @param start  
@@ -102,12 +91,7 @@ void AudioProvider::GetAudioWithVolume(void *buf, int64_t start, int64_t count,
 	}
 }
 
-/// @brief Get provider 
-/// @param filename 
-/// @param cache    
-/// @return 
-///
-AudioProvider *AudioProviderFactory::GetProvider(wxString filename, int cache) {
+AudioProvider *AudioProviderFactory::GetProvider(wxString const& filename, int cache) {
 	AudioProvider *provider = NULL;
 	bool found = false;
 	std::string msg;
diff --git a/aegisub/src/include/aegisub/audio_provider.h b/aegisub/src/include/aegisub/audio_provider.h
index eda834d35..6eb6900b2 100644
--- a/aegisub/src/include/aegisub/audio_provider.h
+++ b/aegisub/src/include/aegisub/audio_provider.h
@@ -48,16 +48,7 @@
 ///
 /// DOCME
 class AudioProvider {
-private:
-
-	/// DOCME
-	char *raw;
-
-	/// DOCME
-	int raw_len;
-
 protected:
-
 	/// DOCME
 	int channels;
 
@@ -75,8 +66,7 @@ protected:
 	wxString filename;
 
 public:
-	AudioProvider();
-	virtual ~AudioProvider();
+	virtual ~AudioProvider() { }
 
 	virtual wxString GetFilename() const { return filename; };
 	virtual void GetAudio(void *buf, int64_t start, int64_t count) const = 0;
@@ -100,7 +90,11 @@ public:
 class AudioProviderFactory : public Factory1<AudioProvider, wxString> {
 public:
 	static void RegisterProviders();
-	static AudioProvider *GetProvider(wxString filename, int cache=-1);
+
+	/// Get a provider for the file
+	/// @param filename URI to open
+	/// @param cache Caching mode
+	static AudioProvider *GetProvider(wxString const& filename, int cache=-1);
 };
 
 DEFINE_BASE_EXCEPTION_NOINNER(AudioProviderError, agi::Exception)