diff -Nraub mplayer.ori/libmpcodecs/ad_pcm.c mplayer/libmpcodecs/ad_pcm.c
--- mplayer.ori/libmpcodecs/ad_pcm.c	2006-09-12 11:58:43.000000000 -0400
+++ mplayer/libmpcodecs/ad_pcm.c	2006-10-10 13:15:11.000000000 -0400
@@ -17,6 +17,8 @@
 
 LIBAD_EXTERN(pcm)
 
+static void *tmp_buff = NULL;
+
 static int init(sh_audio_t *sh_audio)
 {
   WAVEFORMATEX *h=sh_audio->wf;
@@ -90,6 +92,8 @@
   }
   if (!sh_audio->samplesize) // this would cause MPlayer to hang later
     sh_audio->samplesize = 2;
+  if (sh_audio->channels == 6 || sh_audio->channels == 5)
+    tmp_buff = malloc(2 * sh_audio->samplesize);
   return 1;
 }
 
@@ -101,6 +105,10 @@
 
 static void uninit(sh_audio_t *sh)
 {
+  if (tmp_buff) {
+    free(tmp_buff);
+    tmp_buff = NULL;
+  }
 }
 
 static int control(sh_audio_t *sh,int cmd,void* arg, ...)
@@ -126,5 +134,15 @@
       // based on channels in preinit()
       return -1;
   len=demux_read_data(sh_audio->ds,buf,len);
+  if (sh_audio->channels == 6 || sh_audio->channels == 5) {
+    //Source channel order: L R C  LFE SL SR   or  L R C  SL SR
+    //We want:              L R SL SR  C  LFE  or  L R SL SR C
+    int i, samples = len / sh_audio->samplesize;
+    for (i = 0; i < samples; i += sh_audio->channels) {
+      memcpy(tmp_buff, buf+(i+2)*sh_audio->samplesize, ((sh_audio->channels+1)%2+1)*sh_audio->samplesize); // C (LFE) -> tmp
+      memcpy(buf+(i+2)*sh_audio->samplesize, buf+(i+(sh_audio->channels+1)%2+3)*sh_audio->samplesize, 2*sh_audio->samplesize); // SL SR -> 2,3
+      memcpy(buf+(i+4)*sh_audio->samplesize, tmp_buff, ((sh_audio->channels+1)%2+1)*sh_audio->samplesize); // C (LFE) -> 4(,5)
+    }
+  }
   return len;
 }