Thoughts on Magnetically-Shielded Cables?

Is shielding RCA cables with earth magnets a viable approach to shield the cables from RFI.  I've searched far and wide on the web and can find no research info on this except one manufacturer.  Does anyone have any familiarity with this?  Below is a partial excerpt of the cable description from a reviewer.

'The manufacturer describes construction as incorporating a natural capacitive rejection of radio frequency interference by their construction alone, separates the conductors using a thin layer of Teflon (PTFE) between the send and the return conductors, as well as a large air gap dielectric, and protects this configuration by surrounding it with magnets. These magnets are specially ordered and are magnetically supersaturated in a multiple pole magnetization pattern, so their magnetic strength is evenly distributed across the surface. The cable tested here goes for quality materials ,combines 24k gold, 99.999% pure silver, and oxygen-free copper in a special formulation.'