That is a youtube video link. Go there and you'll hear the most relaxing music. The comments have shown it's been used to put babies to sleep.
Even with Abby at her fussiest, less than 10 rounds and she is out like a light.
This other weapon I discovered when Abby had painful gas. I learned it from Yahoo answers from a dad. Put a blanket on top of the dryer and lay her on top of it. Her crying stops very quickly...
...and within 5 minutes she is fast asleep! So tired her eyes stay closed all the way to the crib.
The dryer works a thousand times better than a bouncer. I do put an extra seat adjuster underneath her for added comfort though.