Onkyo TX RS505 Confused about certain Lights on Unit.

[djcruiser]

Hello everybody,

I got a great deal on a clearance of the Onkyo TX RS505 7.1 Receiver so I bought it($98.00 on clearance at local Circuit City). I had a nice 5.1 setup, but figured even a low end 7.1 would be better.

I know that this receiver only carries HDMI video. Audio is through the optical...And I Know that Optical cannot send 7.1 audio.

My question(s) are these:

1. Why do the indicator lights on the unit include:
TRUE HD
96/24 Express
HD MST
THX

2. If these are able to be utilized with whatever I can use somebody let me know how?

3. If they aren't then why have them on the unit at all?

Also I have PS3 for my Blu Ray playing and the way I have it set-up is better than I had before, but if I can get better I would love too.

I did look up the User Manual online and didn't see any help with this.

Thanks in advance for any info/help you can give