Calculate the total length of music/sound files in a folder

gistfile1.py

import re
import glob
import commands

duration_re = re.compile(r'(?P<hour>\d+):(?P<minute>\d+):(?P<second>\d+\.\d+),')
hour = minute = second = 0.0

for f in glob.glob("./*"):
    s = commands.getstatusoutput('ffmpeg -i %s 2>&1 | egrep "Duration" | cut -d " " -f 4' % f)[1]
    m = duration_re.match(s)
    hour += int(m.group('hour'))
    minute += int(m.group('minute'))
    second += float(m.group('second'))

total_seconds = hour * 3600 + minute * 60 + second

tmin, tsec = divmod(total_seconds, 60)
thour, tmin = divmod(tmin, 60)
print thour, tmin, tsec