diff --git a/TODO.txt b/TODO.txt
index 53eb2bd..0cc45c9 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -131,7 +131,9 @@ level ideas:
 
 bugs:
 
-- On desktop, SDL makes a high-pitched noise with music on for some reason.
+- On desktop, SDL makes a high-pitched noise because of DC offset. Maybe put an
+  average DC offset for each track into assets so that music player can use this
+  to normalize the track?
 
 done: