strncpy(filename3, filename, sizeof(filename3) - 1);
      endpart = strrchr(filename3, '/');
      if (endpart) {
         *endpart = '\0';
         endpart++;
         snprintf(filename2, sizeof(filename2), "%s/%s/%s", filename3, preflang, endpart);
      } else
         snprintf(filename2, sizeof(filename2), "%s/%s", preflang, filename);

      strncpy(filename2, filename, sizeof(filename2)-1);
      fmts = opbx_fileexists(filename2, NULL, NULL);