diff --git a/js-programming/bytebeat-render.js b/js-programming/bytebeat-render.js
index 348300d..c6f62c3 100644
--- a/js-programming/bytebeat-render.js
+++ b/js-programming/bytebeat-render.js
@@ -11,6 +11,8 @@
  * TODO: Fix signed bytebeat and floatbeat
  * TODO: Add support for arbitrary (1 <= integer <= 2^32 - 1, because of
  * WAVE/RIFF format limitations) audio bit depth
+ * TODO: Do not use FFmpeg, use `pcm.js` or simply write the WAVE/RIFF file
+ * headers
  *
  * Author: Intel A80486DX2-66
  * License: Creative Commons Zero 1.0 Universal