If your considering this a preview version, you could just make a small .avi/.mov/.qt/mp4/.wma/etc file (maybe 320x240) and upload it to one of the free sites like http://megaupload.com/ or http://www.yousendit.com/. This way you could get some feedback on what you've got, without all the effort of a full release. Maybe chop it up into small pieces for everyone to consume, maybe 2-6 minute chunks of parts you think work really well. none