The second question: There is no screen saver when the player is set to play in full screen.
Third question: That should be a local download. When downloading, just right-click and download with Thunder. Or set it as the default download in Thunder settings. After setting it up, downloading everything is as fast as lightning.
I am also a W7 system. This system is a bit high-end, I'm not used to it. I will switch to XP after a while.
Suggestion: Go to the home page of the control page, click the view mode in the upper right corner, and then select the big icon, so that everything is easy to find.