I pretty much only use it to stream music from my desktop to the good speakers in the living room without losing the office speakers, and to mirror my desktop to the living room tv for video watching. The desktop is the source, the tv is the remote screen. It looks like most tuners are set up to capture from the tv and stream to the desktop (which is also really cool, especially with all the bells and whistles for playback, but not what I need right now).