Windows 7: Static in front audio, only when windows is running?

I built my first computer, and for the first time and this is the first time that I have had a bottom mounted power supply.

Now, I've tried three different front audio headers; the first one came with the case. When everything was in the case, there was a high amount of static on the headphone jack. I also tried the first one, but taking the audio port far away from the rest of the machine, and there was no static
Second one I tried was a replacement for the first one. I did not try it outside of the case, but when inside, there was static.
The third one I tried was my old front panel. I tried it outside of the case, and there was no static.

At this point I thought it was EMI, so I wired the audio cable as far away from everything else as possible, but there is still static.

Someone reccomended I put some "ferrite toroids" around the audio cable.. But I do not have any of these, nor do I know where to get them. the link they sent me to suggested taking them out of an old power supply...

Is there anything I can put along the wire to insulate it from EMI? I'm thinking a small bit of foil or something..