Does this mean you'll be offering paid clips in more than one format?
I understand that that would increase your storage costs and that server space is not cheap, but it wouldn't impact your served bandwidth - people who bought the clip would just choose the format they wanted, so you'd be serving the same amount of data (assuming the files were about equal in size).
I really can't buy anything in .wmv format because I have no way of knowing if it will play - some wmv files play fine, some don't. Your sample file does not work, so I have to assume that all the wmv produced by you won't work either.
It's a shame. Paradise Vision offers two formats for their download clips, but it's a bit of a quality lottery - a lot of them are quite ropey in either picture or sound. realtickling.coms's clips have always been extremely good for visual and audio quality, which matters to me as a pro video engineer myself - alas, I make corporate videos and DVDs - nowhere near as exciting as tickling videos!