I was attempting to open a video file with Windows Media Player. It opened fine, but instead of showing a video as well as audio, it only used audio. I then attempted to open the zip file it was in, using WMP. Big mistake, as that changed every zip file on my computer to a WMV file. Infuriated, I searched on the interent for a way to reverse it and found none. I then figured that I could just download them all again. Big mistake again. Upon odwloading it, the zip file changed into a WMV file again....