#2
It converts light signals to analog signals and vice-versa. It is, as the article says, supposed to eliminate the problems inherent in sending an electric current through a copper cable to transmit the signal. I do not know how successful it will be in the instrument cable arena. For live performances, wireless has become almost universal. But it might have a future with people who nit-pick their sound to death in the recording studio. A side-by-side comparison with a high-quality regular cable might prove interesting.
"Maybe this world is another planet's hell?" - Aldous Huxley
#3
whoa. really this makes me feel stupid that our entire guitar playing world hasnt done this before. i mean fiber optics have been used for years.

checking their site out now.
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