#!/usr/bin/python3
from glob import glob
import subprocess
import os

for f in glob('gongs/*/*.mp3'):
    t = f.replace('gongs/', 'gongs_wav/').replace('.mp3', '.wav')
    print(f, t)
    folder = os.path.dirname(t)
    if not os.path.exists(folder):
        os.makedirs(folder)
    subprocess.call(['ffmpeg', '-i', f, t])