There are at least two easy to try remedies.
1. The first reflection point is now occupied with the plasma screen. I would first try a blanket over the plasma. It does make a difference, how much it does is a matter of point of view.
2. The isolation for the CD player and digital gear might have changed. Try a wooden block under the CD player, and if it helps get a real isolation platform.
Also if you have added a power conditioner when you added the plasma TV, try plugging in directly to the wall and see if it makes any difference.
1. The first reflection point is now occupied with the plasma screen. I would first try a blanket over the plasma. It does make a difference, how much it does is a matter of point of view.
2. The isolation for the CD player and digital gear might have changed. Try a wooden block under the CD player, and if it helps get a real isolation platform.
Also if you have added a power conditioner when you added the plasma TV, try plugging in directly to the wall and see if it makes any difference.