Stuff

   opbx_copy_string(filename3, filename, sizeof(filename3));
   endpart = strrchr(filename3, '/');
   if (enpart) {
      *endpart = '\0';
      endpart++;
      snprintf(filename2, sizeof(filename2), "%s/%s/%s", preflang, filename3, endpart);
   } else
      snprintf(filename2, sizeof(filename2), "%s/%s", preflang, filename);
   fmts = opbx_fileexists(filename2, NULL, NULL);