Play music for every new line added to text file

app.py

import os

old_ll = None
new_ll = None

with open("values.txt", "r+") as f: 
    for old_ll in f:
        pass

while(1):
	with open("values.txt", "r+") as f: 
	    for new_ll in f:
	        pass

	if(old_ll!=new_ll):
		old_ll = new_ll
		os.system("open aduio.mp3")