--- main/libmpdemux/demux_audio.c	2005-07-27 22:11:53.000000000 -0400
+++ main/libmpdemux/demux_audio.c	2005-07-27 22:15:19.000000000 -0400
@@ -415,7 +415,8 @@
     l = 65535;
     dp = new_demux_packet(l);
     l = stream_read(s,dp->buffer,l);
-    priv->last_pts = priv->last_pts < 0 ? 0 : priv->last_pts + l/(float)sh_audio->i_bps;
+    if (sh_audio->i_bps) {priv->last_pts = priv->last_pts < 0 ? 0 : priv->last_pts + l/(float)sh_audio->i_bps;}
+    else priv->last_pts = 0;
     break;
   }
   default:
@@ -424,8 +425,9 @@
   }
 
   resize_demux_packet(dp, l);
-  ds->pts = priv->last_pts - (ds_tell_pts(demux->audio) -
-              sh_audio->a_in_buffer_len)/(float)sh_audio->i_bps;
+  if (sh_audio->i_bps) {ds->pts = priv->last_pts - (ds_tell_pts(demux->audio) -
+              sh_audio->a_in_buffer_len)/(float)sh_audio->i_bps;}
+  else priv->last_pts = 0;
   ds_add_packet(ds, dp);
   return 1;
 }