import RPi.GPIO as GPIO
import time
import subprocess
GPIO.setmode(GPIO.BCM)
GPIO.setup(23, GPIO.IN)
GPIO.setup(24, GPIO.IN)
GPIO.setup(25, GPIO.IN)

while True:
    if GPIO.input(24) == 0:
        subprocess.call("/home/pi/script/mute_on_ch1.sh", shell=True)
    else:
        # Einschalten
        subprocess.call("/home/pi/script/mute_off_ch1.sh", shell=True)