--- a/src/audio/coreaudio/SDL_coreaudio.c	Tue Aug 09 16:57:49 2016 -0400
+++ b/src/audio/coreaudio/SDL_coreaudio.c	Tue Aug 09 16:58:06 2016 -0400
@@ -375,6 +375,7 @@
             if (len > remaining)
                 len = remaining;
 
+            /* !!! FIXME: why are we copying here? just pass the buffer to the callback? */
             SDL_memcpy((char *)this->hidden->buffer + this->hidden->bufferOffset, ptr, len);
             ptr += len;
             remaining -= len;