convert an mp3 to wav using lame -- useful for converting whole directories

mp3towav

#!/usr/bin/env python
import os
import optparse

def processfile(fi, fo) :
	print 'lame --decode --quiet %s %s' % (fi,fo)

if __name__ == '__main__':
    # parse options
    parser = optparse.OptionParser()
    parser.add_option('-d', '--dir', dest='dir', default=False, action='store_true', help='convert whole directories')    
    (options, args) = parser.parse_args()
    if len(args) != 2 :
        print 'wrong usage'
        exit(1)
    if options.dir :
    	dirin = args[0]
    	dirout = args[1]
    	infiles = os.listdir(dirin)
    	for fi in infiles :
    		if fi[-4:] == '.mp3' or fi[-4:] == '.MP3' :		
    			print 'echo processing %s' % os.path.join(dirin,fi)
	    		fo = fi[:-4] + '.wav'
	    		processfile(os.path.join(dirin,fi), os.path.join(dirout,fo))
    else :
		processfile(args[0],args[1])