A very small and yet-to-be-completed Python program for some sound file renaming.

renamer.py

import os
import glob
import re

file_prefix = "prompt_pronunciation_vl_"
file_extension = ".wav"

index_range = [1, 1139]
index = 1
number_of_zeroes = 4

def k(s):
    """ Used for human / natural sorting.
        For detailed technical discussion see resources below

        http://stackoverflow.com/questions/1940056/python-sorts-u11-phrase-1000-wav-before-u11-phrase-101-wav-how-can-i-overcom
        http://nedbatchelder.com/blog/200712/human_sorting.html
        http://www.codinghorror.com/blog/archives/001018.html
    """
    return [w.isdigit() and int(w) or w for w in re.split(r'(\d+)', s)]


files = glob.glob('*.wav')

for file in sorted(files, key=k):
    if (index >= index_range[0] and index <= index_range[1]):
        print "Current file = " + file
        os.rename(file, file_prefix 
                  + (str(index)).zfill(number_of_zeroes) 
                  + file_extension)
        index = index + 1