diff -u -r1.96 sox.c
--- src/sox.c	20 Mar 2006 02:37:10 -0000	1.96
+++ src/sox.c	17 Apr 2006 16:45:02 -0000
@@ -1121,7 +1121,7 @@
                              &efftab[neffects-1].obuf[total],
                              (st_ssize_t)efftab[neffects-1].olen-total);
 
-              if (len < 0)
+              if (len < 0 || file_desc[file_count-1]->file.eof)
               {
                   st_warn("Error writing: %s",
                           file_desc[file_count-1]->st_errstr);
diff -u -r1.74 st.h
--- src/st.h	20 Mar 2006 03:25:12 -0000	1.74
+++ src/st.h	17 Apr 2006 16:45:02 -0000
@@ -20,7 +20,7 @@
 #include "ststdint.h"
 
 /* Release 12.18.1 of libst */
-#define ST_LIB_VERSION_CODE 0x0c1109
+#define ST_LIB_VERSION_CODE 0x0c1201
 #define ST_LIB_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
 
 typedef int32_t st_sample_t;
diff -u -r1.7 stio.c
--- src/stio.c	21 Feb 2006 03:06:54 -0000	1.7
+++ src/stio.c	17 Apr 2006 16:45:02 -0000
@@ -246,6 +246,7 @@
          */
         if (!strcmp(ft->filename, "-"))
         {
+            SET_BINARY_MODE(stdout);
             ft->fp = stdout;
 
         }
diff -u -r1.20 vorbis.c
--- src/vorbis.c	1 Oct 2005 20:02:03 -0000	1.20
+++ src/vorbis.c	17 Apr 2006 16:45:03 -0000
@@ -26,6 +26,9 @@
 #include <math.h>
 #include <string.h>
 
+#include <sys/types.h>
+#include <sys/stat.h>
+
 #include <ogg/ogg.h>
 #include <vorbis/codec.h>
 #include <vorbis/vorbisfile.h>
@@ -73,7 +76,12 @@
 
 /* Taken from vorbisfile.c in libvorbis source code */
 static int _fseek64_wrap(FILE *f,ogg_int64_t off,int whence){
-  if(f==NULL)return(-1);
+  int filetype;
+  struct _stat st;
+  _fstat(f, &st);
+  filetype = st.st_mode & _S_IFMT;
+
+  if ((f==NULL) || !(filetype == _S_IFREG)) return(-1);
   return fseek(f,(int)off,whence);
 }