Computer (Win 7) is in one room, Audio system in a nearby closet. Want to extend to two additional screens with full control of computer & Audio at both new locations. One screen is 15' from viewing/desired control location and the other screen is 10' from viewing/desired control location.

Need access/control for full PC functions with Netflix being a focus. Need full control of Audio system (Receiver, CD-DVD player, 300 CD jukebox).

Where do I start? I have one open HDMI on current screen. Will be adding screen in kitchen which can be WiFi equipped if desireable/needed.

Large easy access attic for drops for KVM switches or whatever.

I'm computer literate but inexperienced in this area.

Any and all help is appreciated!