Yeah, I wouldn't try to do too much in MC's browser, just run it in a separate browser, and it should be fine. There are scripts out there, (I believe ahk scripts) that will refocus one window when the next closes. I use this kind of think in windows media center all of the time with a program called relaunch. Look up the GitHub page for it, and it has a link that explains exactly how it works. A large part of it won't apply to MC but the window focusing thing might come in handy if you can pick that part out of it.