So is it possible to listen/watch my tv with my ceiling speakers or do i need to do something with reciever settings or purchase some composite wires, digital optical wires, etc..
ALSO what is HDMI control, RIHD, & Audio Return Channel
When watching TV, are you using the TV's internal tuner? You would be if you have cable connected directly to the TV or are using an external antenna (for 'over-the-air' HD). If that is the case, you would need a digital optical cable from the TV's optical out to an input on the receiver.
I forget the name of the setting, something like HDMI audio out or TV audio out, in the Onkyo settings menu. It needs to be off, so that the receiver doesn't send the audio to TV.
HDMI CEC (Consumer Electronics Control) is a control scheme whereby devices connected via HDMI can control each other. You could use eg. the TV's remote control to control a DVD player if both are connected via HDMI and both support HDMI CEC. It allows 'convenience' type features like if you turn on the dvd player, the receiver will automatically turn on and select the dvd input. It can be useful for simple setups but most people just use a universal remote to do the same things.
RIHD is Onkyo's implementation of HDMI-CEC. It stands for Remote Interactive over HDMI. Onkyo has long had RI which does most of the things HDMI-CEC now does but only worked between Onkyo components and the downside is you have to have analog connections. HDMI-CEC is the industry's attempt to standardize these control schemes so different devices from different manufacturers can work together.
The Audio Return Channel allows the TV to send its internal audio, like when using its internal turner, back to the receiver over the same HDMI cable that you connected to the receiver's output. Both TV and receiver must support it and if yours do, then you wouldn't need the additional optical cable.