New super conductor

Every ten or twenty years there’s an article on room temperature superconductivity and audiophiles get conniptions thinking finally, they will be able to see Diana Krall right there in the room.
I recall the late 1970s and talk of Josephson junctions and the then-future fast supercomputers that would use them, one supposed-theoretical application for a room-temperature superconductor was in a phono cartridge. I wonder if the difference in resistance of the windings being zero would help much at all.