How to create your own solid-state audio/video switcher

There’s nothing like some good ole’ soldering to get the blood pumping… you know?
If you’re down on your cash and you can’t afford those fancy schmancy audio/video switchers, no problem! Engadget can show you how to build your own on the cheap. All the solid-state means is that instead of using a mechanical switch, it uses a circuit based switch and thereby has no moving parts to make it work.
Nothing like stopping at Radioshack. Brings back memories.