Hello pereroca !
Well, if you can see them! THANK GOD ! hehe I have used and work , say there are 2 examples maneras.Te
1. OPlayer With HD application . From films / series junkies ( which is where I have tried it ) once I get the megaupload link to download and give me the play perfectly , so if you have to wait a little while until a good percentage downloaded to start uncut playing .
2 . DOWNLOADS With HD application . The same process, but you will see that depending on the video format you have downloaded you will get a message saying the video format is not supported, but that's where the " trick " is . When you access the application downloaded from the truth that once you are in the message format does not support video, top right gives you the option to open with ... ( WILL NEED THE OPlayer HD) and you give the program files OPlayer HD , quiet wait because it looks like you have not made any use case , but after a while the OPlayer application will open and you can play it.
Make up your own me!