This is an extremely easy fix. Patch attached.
--- mp3rename.c.old 2008-06-23 21:14:08.000000000 -0400
+++ mp3rename.c 2008-06-23 21:10:27.000000000 -0400
@@ -44,7 +44,7 @@
/* Lets checkout the options */
- while ((ch = getopt(argc, argv, "vfhsbia")) != -1)
+ while ((ch = getopt(argc, argv, "vfhsbiap")) != -1)
switch (ch)
{
case 'v': /* Verbose mode */
