I encoded a short clip in .asf format with Sonic Foundry Stream Anywhere so that the file size smaller and I can email it... does the receiver of my email need the divx codec to watch .asf files? I wonder cause VirtualDub in file information section says the .asf file is Microcrap MPEG4 V3 codec - is this divx? will someone with just winmediaplayer and no other codecs installed be able to play the video?