--- uae/src/audio.c	2018/04/24 16:43:19	1.1.1.3
+++ uae/src/audio.c	2018/04/24 16:44:39	1.1.1.4
@@ -427,6 +427,7 @@ static __inline__ int sound_prefs_change
 {
     return (changed_prefs.produce_sound != currprefs.produce_sound
 	    || changed_prefs.stereo != currprefs.stereo
+	    || changed_prefs.sound_freq != currprefs.sound_freq
 	    || changed_prefs.sound_bits != currprefs.sound_bits);
 }
 
@@ -440,6 +441,7 @@ void check_prefs_changed_audio (void)
     currprefs.produce_sound = changed_prefs.produce_sound;
     currprefs.stereo = changed_prefs.stereo;
     currprefs.sound_bits = changed_prefs.sound_bits;
+    currprefs.sound_freq = changed_prefs.sound_freq;
 
     if (currprefs.produce_sound < 2)
 	return;
@@ -463,7 +465,7 @@ void update_audio (void)
 {
     unsigned long int n_cycles;
 
-    if (currprefs.produce_sound == 0)
+    if (currprefs.produce_sound < 2)
 	return;
 
     n_cycles = cycles - last_cycles;