Mega Upload doesn't stream video. Those are downloads that you can save to your PC and watch from your Windows Media Player, or other video player you may be using.
I'm currently switching the video files to a new server account, so I will no longer be using Mega-Upload. It's a work in progress, so some files are already on the new server and some are not.
The new server account is superior to Mega-Upload in many ways, so it's considered an upgrade.
Hope this helps.