UAC prompt, while video playing, disable Aero [#8609]

[abeloin]

MM4 build 1450, Windows 7

Steps:
1. Play a video.
2. Run Notepad as administrator
3. Accept the UAC prompt.
4. Aero disabled by MediaMonkeyVHelper.exe
5. Stop video and Aero is back.

[rusty]

Thanks. Tracked at:
http://www.ventismedia.com/mantis/view.php?id=8609

-Rusty