Ok I tried everything I said in my previous post. The Sony CD changer sounded marginally better than my portable CD player, and still muffled. I did try hooking up some nice headphones into the amp though, and it sounded perfect. Not muffled at all, and the music seemed to have real depth, whereas when I turned my speakers back on they were muffled and a bit hollow. I figure that now the only things that could be the problem would be the speaker placement or the speaker wires. They are only cheap Monster Cables afterall, but shouldn't make the sound so much more drasticly worse. I moved the speakers about 2 feet away from the wall and spread then farther apart and I didn't notice much of a change. I even put them on the floor and didn't notice much of a change.
Arrrgggg!