This is a noob question, so brace yourself: If I were to get the x-sub, a pair of x-ls speakers, and the Onkyo TX-SR304B receiver, how exactly would I connect my Xbox 360, DirecTV receiver and Wii to all this? The 360 uses VGA for video and stereo cables for audio, and the DirecTV receiver and Wii also use stereo cables for audio and component cables for video. Also, are there better cables I can get for each (Optical, for example), while keeping the existing video cables?