--- a/music2/koedec_ogg.cc
+++ b/music2/koedec_ogg.cc
@@ -98,10 +98,20 @@ static long ogg_tellfunc(void* datasourc
 static int ogg_closefunc(void* datasource) {
 	return 0;
 }
+
+static int fseek_wrap(FILE *f,ogg_int64_t off,int whence){
+  if(f==NULL)return(-1);
+  return fseek(f,off,whence);
+}
+
+
 int ogg_get_rate(FILE *stream)
 {
 	OggVorbis_File vf;
-	ov_callbacks callback(OV_CALLBACKS_DEFAULT);
+	ov_callbacks callback;
+	callback.read_func = (size_t (*)(void*, size_t, size_t, void*))fread;
+	callback.seek_func = (int (*)(void*, ogg_int64_t, int))fseek_wrap;
+	callback.tell_func = (long int (*)(void*))ftell;
 	callback.close_func = NULL;
 	ov_test_callbacks(stream, &vf, NULL, 0, callback);
 	int rate = vf.vi->rate;