Dr. Wayne Dyer has a few CDs on making things happen in life by adjusting one's consciousness with the use of sound vibrations. I have experimented with this type of meditation and it worked so well I backed off -- it is a new experience to have a coincidence happen within moments of visualizing a need for something. It is unnerving to say the least.
You can also read some of my previous entries in which I practiced this meditation and experimented with various ways of doing it -- including placing the sound online so whoever read the sounds manifested the sound. I don't know it it works for the person reading it (only if they contacted me could I know), but I can certainly notice results in my immediate experiences. As I said before, the coincidences that happen are un-nerving.