This idea may seem a little excessive, but it covers all of the possiblities.

Many CD players automatically start playing as soon as they are powered up. For this reason, simply turning the power on and off when a zone is turned on or off creates premature wear on the CD changer. It can be playing for hours without any demand for it.
It is ideal, however, to kill the power to the CD changer when none of the zones are activated. For this purpose alone, I would reccomend connecting each of the status outputs of the ZPR-68 through diodes to a Xantech AC-1 or home-made power relay (very easy to make by installing a 12-volt relay inside a power strip to switch the AC).

Now for the more challenging part... You can use a Xantech CC62, which is a bank of six DPDT relays, with each seperately switching the positive side of a common 12-volt power supply through diodes to a Xantech 599-00 pulse generator, which triggers either an stop or play command for the CD changer. Each of the six relays can be programmed with a seperate on and off command with six different sets of codes. When you push any source button other than CD, an off command (part of the sequence) turns off the relay dedicated to that zone. If the "CD" button is pushed, that same relay switches on. Each zone has a dedicated relay (there are six of them on the CC62), each of which can switch 12 Volts to the 599. If the 599 receives 12 Volts from any of the relays, the CD will get a "Play" command. Likewise, if none of the zones is in the CD mode, none of the relays will feed 12V to the 599, which will then activate an off command for the CD. The "relay off command" will be programmed into each of the function buttons other than CD. The relay off command will also be programmed into the "Off" sequence.

The advantages of this setup are many:
1. The CD will only play if one or more of the zones has had the CD button pushed.
2. The CD will only stop if none of the zones is using the CD.
3. The CD will ignore stop commands created by turning just one zone to another source or off, if another zone is still using the CD.
4. The CD doesn't have to run through another initial "inventory cycle" , as it ordinarily does when power is interrupted every time the CD mode is used.
5. It is not imperative to switch the power of the CD changer off or on, if you want to save money. The most important thing is to stop the mechanism, which this circuit will do.
6. The 590 could also be used for numerous infrared sub-routines triggered by status, dry contact, or any other type of switch.
7. The logic of this circuit cannot be thrown out of sync by people manually operating the CD player or pushing stop or play on the keypad.

I know this idea can be a bit expensive, but it definately solves the problem. If you need more information or you can't visualize this circuit, feel free to e-mail me at [email protected].