The rice and beans can be purchased through Machina Dynamica. Placement is critical.
What looks like tiles are actually used to tune your sound. They are filled with a patented substance and then a coating made from compressed sugar is layered over it. Over time the outside coating hardens protecting the gummy inner substance. First discovered by one of Americas original audiophiles, Wrigley. They work best when carefully glued about the room and on your speakers. However, many people have had jaw dropping improvements by simply putting them in jars on top of their components. They also can be strung on string to make a bracelet. This gives the audiophile the ability to take them on the road, improving sound everywhere.
I have heard that you can also call your audiophile friends on the phone and when they answer you throw the "tiles" at the phone and your friend's equipment will improve dramatically.