anyone know about--a device [about $40] that lets you get off of cable/sat. & "for free" streams tv signals to your computer.?? kinda like magic jack which lets you use phone through the internet [which works fine for me] only problem is it doesn't ring when the computer is off [but does take msgs.] you don't have to worry about burning up cell phone air time. just wondering if anyone had tried the "free tv" angle, thx