diff --git a/mencoder.c b/mencoder.c
index b18cf3cb8e..fa3f2ab170 100644
--- a/mencoder.c
+++ b/mencoder.c
@@ -722,7 +722,10 @@ if(!muxer) {
   mp_msg(MSGT_MENCODER, MSGL_FATAL, "Cannot initialize muxer.");
   mencoder_exit(1,NULL);
 }
+#if 0
+//disabled: it horrybly distorts filtered sound
 if(out_file_format == MUXER_TYPE_MPEG) audio_preload = 0;
+#endif
 
 muxer->audio_delay_fix = audio_delay_fix;