Are Audiophiles dying out?

[Barry]

Hopefully they'd be intelligent enough to know that the tracking force of their cartridge could be radically different here to their home planet.

The Voyager gold disc was accompanied with a pickup cartridge and instructions on how to play it. The record itself is played just like a record here, but at a speed of 16 2/3 rpm, and there is a reference to a hydrogen transition resonance frequency, so the aliens will know to spin the disc at exactly 3.6 seconds per revolution.

There was video information on the disc as well.