The mind is a strange thing. The perceived difference can be staggering. Have you ever experienced anything like this before? I know that for myself, just listening to the same performance of a piece of music in two different moods can result in responses ranging from me being apathetic to totally enthusiastic about all the little things going on in the music. For example, Mozart is a snoozer for me at home, but it's different when a friend is here listening with me. We're not saying anything, just listening together. Or a song that sounded really cool to me would sound like a real cheeser of a piece when another friend is here and I'm showing it to him. Suddenly I'm filled with self-doubt that my friend will think it's as cool as I previously did, and I suddenly spot all sorts of flaws in the music writing that make it kinda lame. It's powerful stuff and worth a shot.
In any case, did you see the substitute foil that pinkie mentioned in the other thread? Possible for a $1 sheet to be used with 1000 cds or so. Now, at that rate, I'd be more than willing to try out some o' this good ol' placebo stuff.
As an aside, I thought to let you know that I'm currently in the process of burning in my subwoofer. Yes, the woofers will change with use, I don't think anyone will fight that one since DIYers have taken measurements before and after use and post the average results online (average of different woofers of the same model) so that DIYers without expensive testing equipment can voice and design their crossovers. And the amp is new too, though I don't know how much evidence there is for an amp burning in over time. In any case, I'm trying to convince myself that my subwoofer is sounding better and better each day! Wish me luck