Was unable to play the clip.
But I've had RFI from a neighbor's plasma TV, which wiped out numerous frequencies from 7 Mhz to 13 Mhz or so. Was really bad on 40-41 meters, 31 meters had issues, too.
I've had a DVD player that put harmonics out all over the place, seemed to have a lot of them on 20 meters.
Unplugging it when not in use helped.
I had a printer that put out whines on 20 meters, even when turned off (probably self cleaning or whatever). I unplug it most of the time when not in use.
My router puts out hash in various places when I plug the cable that goes to the computer. When I use it just on wireless the hash from the router is lessened.
Bad CFL bulbs will put out AC sounding hash even if they are putting out light correctly, so don't rule them out. I had one that wiped out the AM band below 650 khz.
A trip around the house with a portable *SW* radio will help you find interference on the SW spectrum. Put it on one of the SW bands -- especially the ones you see affected (if your SW radio only picks up AM modulation, still use it, the hash should still show up).
The AM band won't pick up a lot of interference that occurs in the HF spectrum -- in my experience, anyway.
If it's a power pole arc or bad CFL bulb, an AM radio will probably pick it up. But if it's digital in nature (switching power supplies, routers, plasma TV's etc.) I've found that putting a radio on one of the SW bands helps better. That was how I found a neighbor's washer which put out alien attack noises all over the HF band from 49 meters to 21 meters. It was using the power lines as a radiating antenna.
