diff -r 000000000000 -r 6474c204b198 media/libsoundtouch/src/soundtouch_config.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/libsoundtouch/src/soundtouch_config.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+#include "mozilla/SSE.h"
+
+#ifdef MOZ_SAMPLE_TYPE_FLOAT32
+#define SOUNDTOUCH_FLOAT_SAMPLES 1
+#else
+#define SOUNDTOUCH_INTEGER_SAMPLES 1
+#endif
+
+#ifndef MOZILLA_PRESUME_SSE
+#ifdef MOZ_SAMPLE_TYPE_FLOAT32
+#define SOUNDTOUCH_DISABLE_X86_OPTIMIZATIONS 1
+#endif
+#endif
+
+#ifndef MOZILLA_PRESUME_MMX
+#ifdef MOZ_SAMPLE_TYPE_S16
+#define SOUNDTOUCH_DISABLE_X86_OPTIMIZATIONS 1
+#endif
+#endif