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#!/usr/bin/env python
import os

# Set the paths
INPUT_DIR = "CHANGE TO INPUT DIRECTORY"
OUTPUT_DIR = INPUT_DIR + "/Output"

# Check to make sure the directories exist and are accessible
try:
	os.chdir(INPUT_DIR)
	print "Input Directory Set: " + INPUT_DIR
	
	# Let's go and make the output directory if it's not already created
	try:
		os.mkdir(OUTPUT_DIR)
		print "Output Directory Set: " + OUTPUT_DIR
	except os.error:
		try:
			os.chdir(OUTPUT_DIR)
			os.chdir(INPUT_DIR)
			print "Output Directory Set: " + OUTPUT_DIR
		except os.error:
			print "Output Directory Inaccessible: " + OUTPUT_DIR
	
	# Now let's go through and deal with all the sound files
	DIRECTORY_CONTENTS = os.listdir(INPUT_DIR)

	for INPUT_FILE in DIRECTORY_CONTENTS:
		try:
			INPUT_PATH = INPUT_DIR + "/" + INPUT_FILE
			if INPUT_PATH.index(".caf") > 0:
				print "Input File: " + INPUT_PATH
				OUTPUT_PATH = OUTPUT_DIR + "/" + INPUT_FILE + ".aiff"
				print "Output File: " + OUTPUT_PATH
				COMMAND = "afconvert -f AIFF -d I8 " + INPUT_PATH + " " + OUTPUT_PATH
				print "Command Call: " + COMMAND
				os.system(COMMAND)
		except ValueError as e:
			print "Value Error: {0}".format(e)
		except subprocess.CalledProcessError as e:
			print "Process Error #{0}: {1}".format(e.errno, e.strerror)
			
	
except os.error as e:
	print "OS Error #{0}: {1}".format(e.errno, e.strerror)
	exit