Glass Flat Pannel Speakers

I was looking around the mall in Indy last weekend, and came across an electronics store that had these tempered glass speakers. They were literally a 12" x 12" and 4" x 6" sheet of colored tempered glass. The sound they emitted was comparable to my Bose, crisp, clear, and realistic.

I was wondering if anyone had seen speakers like this? Who might manufacture them? How the technology works? I have found devices that can produce sound from any smooth surface…http://www.soundbug.biz. However there were only two small @ .5" Diameter metal mounting disks that both connected the speaker to the wall, and a small @ 1" x .75" box containing the IR eye. Totally wireless connection to the CD/DVD player which featured exposed disk operation. Whole thing was $9k.

Any suggestions on were I could locate additional information will be greatly appreciated.

Thanks as Always
ML