#!/usr/bin/python

from __future__ import division, nested_scopes
import sys, wave

def wavelength(filename):
    wavefile = wave.open(filename, 'rb')

    framerate = wavefile.getframerate() # frames / second
    nframes = wavefile.getnframes() # number of frames
    song_length = nframes / framerate

    return song_length

if __name__ == "__main__":
    for songfile in sys.argv[1:]:
        print songfile, wavelength(songfile)