Clue one: The soothing, subtle sound of the heartbeat Clue two:Ambient, soft conversation sounds Answer: The SoundSleep for Babies CD, from Sound Science A lot of parents, especially frustrated ones, have tried products that say they’ll help soothe your baby. And then you turn it on. Far less from soothing, they seem to actually be bothering both you and the baby. That’s not true with the SoundSleep for Babies CD. The very first time I used the product I was amazed. I put the CD in the player, hooked up the headphones (making sure the volume was appropriate), and put them on a fussy baby. BAM – silence. A doe-eyed, blinking baby was calm. Maybe from the new experience of headphones, but...