diff -r ad4b5d85edee src/audio/SDL_audiotypecvt.c
--- a/src/audio/SDL_audiotypecvt.c	Wed Oct 18 08:52:04 2017 -0700
+++ b/src/audio/SDL_audiotypecvt.c	Wed Oct 18 22:38:55 2017 +0200
@@ -170,7 +170,14 @@
     LOG_DEBUG_CONVERT("AUDIO_F32", "AUDIO_S8");
 
     for (i = cvt->len_cvt / sizeof (float); i; --i, ++src, ++dst) {
-        *dst = (Sint8) (*src * 127.0f);
+        const float sample = *src;
+        if (sample > 1.0f) {
+            *dst = 127;
+        } else if (sample < -1.0f) {
+            *dst = -127;
+        } else {
+            *dst = (Sint8)(sample * 127.0f);
+        }
     }
 
     cvt->len_cvt /= 4;
@@ -189,7 +196,14 @@
     LOG_DEBUG_CONVERT("AUDIO_F32", "AUDIO_U8");
 
     for (i = cvt->len_cvt / sizeof (float); i; --i, ++src, ++dst) {
-        *dst = (Uint8) ((*src + 1.0f) * 127.0f);
+        const float sample = *src;
+        if (sample > 1.0f) {
+            *dst = 255;
+        } else if (sample < -1.0f) {
+            *dst = 0;
+        } else {
+            *dst = (Uint8)((sample + 1.0f) * 127.0f);
+        }
     }
 
     cvt->len_cvt /= 4;
@@ -208,7 +222,14 @@
     LOG_DEBUG_CONVERT("AUDIO_F32", "AUDIO_S16");
 
     for (i = cvt->len_cvt / sizeof (float); i; --i, ++src, ++dst) {
-        *dst = (Sint16) (*src * 32767.0f);
+        const float sample = *src;
+        if (sample > 1.0f) {
+            *dst = 32767;
+        } else if (sample < -1.0f) {
+            *dst = -32767;
+        } else {
+            *dst = (Sint16)(sample * 32767.0f);
+        }
     }
 
     cvt->len_cvt /= 2;
@@ -227,7 +248,14 @@
     LOG_DEBUG_CONVERT("AUDIO_F32", "AUDIO_U16");
 
     for (i = cvt->len_cvt / sizeof (float); i; --i, ++src, ++dst) {
-        *dst = (Uint16) ((*src + 1.0f) * 32767.0f);
+        const float sample = *src;
+        if (sample > 1.0f) {
+            *dst = 65534;
+        } else if (sample < -1.0f) {
+            *dst = 0;
+        } else {
+            *dst = (Uint16)((sample + 1.0f) * 32767.0f);
+        }
     }
 
     cvt->len_cvt /= 2;
@@ -246,7 +274,14 @@
     LOG_DEBUG_CONVERT("AUDIO_F32", "AUDIO_S32");
 
     for (i = cvt->len_cvt / sizeof (float); i; --i, ++src, ++dst) {
-        *dst = (Sint32) (((double) *src) * 2147483647.0);
+        const float sample = *src;
+        if (sample > 1.0f) {
+            *dst = 2147483647;
+        } else if (sample < -1.0f) {
+            *dst = -2147483647;
+        } else {
+            *dst = (Sint32)((double)sample * 2147483647.0);
+        }
     }
 
     if (cvt->filters[++cvt->filter_index]) {