extern boost::shared_ptr<AudioBuffers> remap (boost::shared_ptr<const AudioBuffers> input, int output_channels, AudioMapping map);
extern Eyes increment_eyes (Eyes e);
extern void checked_fread (void* ptr, size_t size, FILE* stream, boost::filesystem::path path);
+extern void checked_fwrite (void const * ptr, size_t size, FILE* stream, boost::filesystem::path path);
#endif