If you have a CD Player, you need to do this periodically...

Just did the Ayre disc..like it a lot...XLO arrives this afternoon...got a bunch of friends lined up to borrow both...fun stuff...

I had just received the Ayre CD from Music Direct last week and just played it yesterday. I have difficulty with subtle improvements if I am not doing a side by side comparison but I will say my system sounded great and for $20 I will continue to play the CD on a regular basis.

What I can say is that I added Cardas Audio Multi Blocks last month to get all of my cables off the floor and segregated and with that I can say my system opened up with a noticeable improvement.

It is another inexpensive adjustment and I am a believer in the sum of all parts.

Will this also work with a CD transport or is it affecting the dac in the CD player? 

I have the disc.  The premise of this discussion is that bits of the system have become magnetized.  My chassis are copper and aluminum.  My cables are silver.  My connectors are gold plated copper.  All the above are non magnetic materials.  Circuit boards are tin plated copper.  So same story.  
 

So which bits would become magnetized?  Inductors and transformers most certainly generate electrical fields.  But that is in the power supply.  I am not using output transformers so nothing to align there.

That is not to say that the disc is not helpful is some way.  

Ah, another example of useless product for the audio system!

As I am a scientist holding PhD., I cannot understand the statement someone mentioned below:

"I don't know why it works, but it improved my system."

Any effect on the sound is very difficult to measure for naked human to detect.

So, there are many product just like snake oil.