Changes
* Does not work on 464 and 464+ (which have internal transistor-driven tape drives without relays).
* Does not work on 6128+ (which has no tape drive connector, and thus no relay).
== Disc Drive Motors ==
The two disc motors can produce some sound: The spinning motor isn't very loud, but the track stepping motor can produce some knock-knock-knock sounds; the stepping rate and number of steps can be controlled by software.
== Printer Beeper ==
