The AphexTwinalizer uses your webcam to make a screenshot, make sure you have the right webcam selected, use your right mousebutton on the flash file and select the webcam in the menu. All pictures and information is stored clientside, nothing is public unless you upload it somewhere else.
You can take a picture (press button 1) and save it as a jpeg file (press button 2). Loading the image in a new window might take a while, make sure to save the file if you want to keep it.
Flash asks you permission to use your camera. You can only allow one flashfile at the same time, make sure to refresh the page if you want to try out another cover.
Let me know about other great ablumcovers that would be fun to see yourself in, the image file should at least be 500/500 pixels.
Have fun.
Wilber Baan 2008 / I write for a dutch groupblog about electronic music at www.eclectro.nl and have a personal blog about art, media and technology at www.hypernarrative.com.
The original - great - Aphex Twin album(cover) Windowlicker can be bought at Amazon.com