It was mentioned earlier that though this solution works, there currently aren't a lot of free american tv stations that are doing streaming television at least on the network side.
You can create an application that integrates with something like Hulu so you can watch specific episodes, but american tv stations are dicks, unless they control it they're not sharing jacks (See Youtube Suit). I asked Ganzas about this earlier, since I don't live in europe and specifically want my network tv shows like family guy, cartoon network, mtv, usa etc.
There are other stations you can get like
http://www.justin.tv/ has a nice list, but so far its going to be custom content. Also Justin tv uses flash format. But just check around a majority of the live streaming, shows I've seen though use either flash or quicktime with the US, but thats only been my experience
If you want to use flash format you could just have to modify the embed to support flash. Its a relatively simple change, and since its using ajax you can update the content div with whatever content you want.
Also you don't have to have silverlight installed for an ajax player to work, especially one thats using windows media player, its only how he coded it.
Geekings,
Woozle