Best device flow with Mac laptop

Curious how other users implement a laptop. I have a mac laptop connect to my Panasonic TV. On the laptop i use xbmc, and a browser with HBO, Showtime & Netflix. Currently, roomie controls none of this.

So, should I add four different activities for each of the above, or one for the laptop and then buttons for each of the four? Not sure the best way to go about it. Please let me know what you do.

Also, how do I go about launching a browser via roomie that pulls up a specific URL? Thanks.