import os
def atEachDir(matchlist,dirname,fileshere):
                for file in fileshere:
                                        if file.endswith('.mp3'):
                                                                        matchlist.append(os.path.join(dirname,file))
matches=[]
os.path.walk(r'/home/rlipman/music/',atEachDir,matches)
for file in matches:
        file=file.replace(' ','\ ')
        file=file.replace('(','\(')
        file=file.replace(')','\)')
        file=file.replace('\'','\\\'')
        os.system('mp3gain -c '+file)
        #print file