There is an app my rove mobile I believe that allows you to view your bb screen on the pc. I don't know if it takes the sound and playes it through your speakers though. I think it's called rove mobile viewer.
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I am a slingbox user, havent tried my tv yet, my slingbox is off right now, but looks like you can watch shows too. i havent played with it, but i got myself logged in, will play with it tonite when i get home.