diff --git a/research/ma_data_source.h b/research/ma_data_source.h
deleted file mode 100644
index a68c990f..00000000
--- a/research/ma_data_source.h
+++ /dev/null
@@ -1,60 +0,0 @@
-#ifndef miniaudio_data_source_h
-#define miniaudio_data_source_h
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
-The raw data source. This is the dry mix.
-*/
-typedef enum
-{
-    ma_data_source_type_callbacks,
-    ma_data_source_type_decoder,
-    ma_data_source_type_waveform,
-    ma_data_source_type_noise
-} ma_data_source_type;
-
-typedef struct
-{
-    void* pUserData;
-    ma_uint64 (* onRead)(void* pUserData, void* pFramesOut, ma_uint64 frameCount);
-    ma_result (* onSeek)(void* pUserData, ma_uint64 targetFrame);
-} ma_data_source_callbacks;
-
-typedef struct
-{
-    ma_data_source_type type;
-    ma_data_source_callbacks callbacks;
-    ma_decoder_config decoder;
-    ma_waveform_config waveform;
-    ma_noise_config noise;
-    ma_allocation_callbacks allocationCallbacks;
-} ma_data_source_config;
-
-typedef struct
-{
-    ma_data_source_type type;
-    ma_data_source_callbacks callbacks;
-    union
-    {
-        ma_decoder decoder;
-        ma_waveform waveform;
-        ma_noise noise;
-    } source;
-} ma_data_source;
-
-ma_result ma_data_source_init_callbacks(const ma_data_source_config* pConfig);
-ma_result ma_data_source_init_decoder(ma_decoder_read_proc onRead, ma_decoder_seek_proc onSeek, void* pUserData, const ma_data_source_config* pConfig, ma_data_source* pDataSource);
-ma_result ma_data_source_init_decoder_file(const char* pFilePath, const ma_data_source_config* pConfig, ma_data_source* pDataSource);
-ma_result ma_data_source_init_decoder_memory(const void* pData, size_t dataSize, const ma_data_source_config* pConfig, ma_data_source* pDataSource);
-ma_result ma_data_source_init_waveform(const ma_data_source_config* pConfig, ma_data_source* pDataSource);
-ma_result ma_data_source_init_noise(const ma_data_source_config* pConfig, ma_data_source* pDataSource);
-ma_uint64 ma_data_source_read_pcm_frames(ma_data_source* pDataSource, void* pFramesOut, ma_uint64 frameCount);
-ma_result ma_data_source_seek_to_pcm_frame(ma_data_source* pDataSource, ma_uint64 targetPCMFrame);
-
-#ifdef __cplusplus
-}
-#endif
-#endif  /* miniaudio_data_source_h */