There are tons of different formats, and the Flip4Mac people are working everyday to get as many comaptible as possible. If you have a specific link, send it to me or
support@flip4mac.com and Telestream will try to get it to work within the next update. This is the great thing about having a company that isn't part of the huge Microsoft...you can actually contact someone who will listen to your requests and do something about it. I've pointed out several sites to them and in the latest 2.0.2 version they are now working. The only thing that MS won't give, is the license to view DRM content, so that's a no go, but I'm quite pleased with F4M now.