Hello, I'm totally new when it comes to HTiB, so I have some basic questions regarding to this BDV-E770W home theater system.
This unit only has one HDMI output, and no inputs at all. So how would I go connecting a PS3, an Xbox 360, and a Wii with this setup and still retain high quality HD 5.1 surround sound and video quality (except for the Wii of course)?
My TV has 3 HDMI inputs, so right now I connect the Xbox and PS3 to the TV each with a HDMI cable, and the Wii with A/V cable. So with E770W, I just connect the HDMI out to the TV's 3rd HDMI input, and then somehow through magic, the audio output from the Xbox and PS3 will end up to the surround sound speakers? I'm confused.

Lastly, from your experience, how much does the rear-speaker-wireless S-Air setup affect home Wi-Fi network? Do you notice notable internet speed drop/disconnect? How's the sound quality compares to wire connection?
Thanks very much! Appreciate the help!