Cheap tweaks...What would YOU reccomend?

For cleaning CD's go to an eyeglass store and ask for their cleaning cloth used on plastic lenses. Runs from $1.00 to $6.00. It is a microfiber material and can be washed and used over and over.
There may be another version which has a wax or cleaning agent in it but I have not found it yet.

1) Make sure are four spikes on speakers are firmly touching the floor. Any wobbling seems to affect imaging and clarity.
2) try http://www.audiotweaks.com for other ideas.

2) negative AU to positive LF. I don't get this. How is the wire negative when it's hooked up to a positive (red) binding post?

Gonglee3, the computer burning technique may be okay but IMHO black Cd's were total garbage. Muddy, fuzzy, low fidelity sound. Sort of like going from 16 bit to the 12 bit CD player in my Denon mini-system.
Another thought, if one prefers low fidelity sound no reason to spend a lot of money for it. Not that black CDR's are more expensive than others, just that why get an expensive CDP to reduce resolution to a subjective 12 bit level? Skip the black CDR and mega $$ CDP, just get a cheap 12 bit CDP like in the Denon UD-M31 mini-system. Just a thought I've been kicking around for a while.

Jes45, I burned the black CDR on a Marantz pro CDR500 at 1x. Like I said, what one person says is "better" is highly subjective. IMHO "Muddy, fuzzy, low fidelity sound" is worse not better. But I have seen more than one audiophile trade in his high resolution setup for one with higher distortion because it sounds "better". That's okay, just not my definition of better. Unless maybe it covers up some problem somewhere else in the system.
None of my burned CDR's sound better unless the recording is very bright and they need a little softening up. But Yamaha makes a hard disc burner which can increase the length of the burned tracks. A CDR can only hold 63 minutes, not 79 because of the longer track length. THAT's a burned disc I'd like to heard.

Degaussing CD:
demagnetizing test tones

Got mine on Stereophile test CD #3

Vinyl lovers can de-mag their cart with this LP:
Cardas LP

Wear some earmuffs for about 1/2 hour before listening to your stereo. When you take them off, your ears will be super-sensitized, at least for a little while, as your brain has adjusted by "turning up the gain" of the input from your ears.

RCA jack cleaners (scroll down the page)

Well, wouldn't the cable which causes less grunge (damage) be the preferred cable?
If a cable which distorts the sounds is preferred, is it fair to say that it's covering another flaw somewhere else in the system?