People...read the sticky!! It's there for a reason.

For us to trouble shoot it, you need to provide lots more info. First, list what's in the system, and in what speakers you are hearing the whine.

And some questions:
1. Did the alternator whine and the track problems with the cd player start at the same time?

2. Have you made any changes at all to your system? Got the car worked on? Moved the amp, etc?

3. Do you or a friend have a spare CD player to swap in there?

4. Has the whine always been there, or did this just start?

Start with that, and we'll see where it goes. My first suggestion would be to check the ground wire on the amplifier. Make sure it's not loose, and that there is no corrosion.

If it is loose, tighten it up, if there's corrosion, disconnect the system fuse under the hood, then take some sand paper, sand the area where it's grounded back down, then reattach the ground (very tight), then add fuse and check the system with the engine on.