We have played music during Mya's naptime and bedtime since the time she was a newborn. For two years, we used my iPod with a speaker. Then for her 2nd birthday, my mom got her a Sweet Pea 3--what a fabulous product!!!
No headphones required....almost indestructable....easy to operate.....kids can't change the volume or mess up anything on it (but mom/dad can very easily).....and it's so cute!!! FIVE STARS from me!