--- openttd/extmidi.c.orig	2004-11-11 20:17:52 +0300
+++ openttd/extmidi.c	2004-12-28 19:07:11 +0300
@@ -39,8 +39,13 @@
 
 static void extmidi_play_song(const char *filename)
 {
+	struct stat st;
+
 	extmidi_kill();
 
+	if (stat(filename, &st) < 0)
+	    return;
+
 	_pid = fork();
 	if (_pid < 0) {
 		fprintf(stderr, "extmidi: couldn't fork: %s\n", strerror(errno));