diff --git a/public/sound/lisp/PracticeWrong.mp3 b/public/sound/lisp/PracticeWrong.mp3 deleted file mode 100644 index 7cf1d5f6f9..0000000000 Binary files a/public/sound/lisp/PracticeWrong.mp3 and /dev/null differ diff --git a/public/sound/lisp/PracticeWrong.ogg b/public/sound/lisp/PracticeWrong.ogg deleted file mode 100644 index 74c78a295e..0000000000 Binary files a/public/sound/lisp/PracticeWrong.ogg and /dev/null differ