Yeah, that won't fly with CSS.
CSS is a design language, and a design language alone. It can't provide any fading or effects to your page, just design. However, it can do some pretty powerful stuff. Learn a bit about CSS: http://www.w3schools.com/css/. Seriously, it's pretty cool, and it might help you design a MySpace layout if you use it properly.
PS, as for the media player thing, their might be a way to do it. I'll be happy to look in to it for you, but don't count on it being something you can use on MySpace.