When I play a Blu-Ray disc, the display just says MULTI CHANNEL, but does not say Dolby TrueHD or DTS HD. Why?

When I play a Blu-Ray disc, the display says Dolby HD +XS or Dolby HD +EX, or Dolby HD +PLIIx M/C. Is the unit playing the HD audio correctly, and what does the XS/EX/PLIIx mean?

How do I get the benefits of Dolby TrueHD and DTS HD?

The Dynamic Range option on the OSD cannot be accessed to change its settings.

When watching a surround movie, the mode is displaying Dolby Pro Logic II, not Dolby Digital or dts

What is the difference between a Factory Default and a User Default?

Is there any way to dim or turn off the front display?

What do I need to run additional zone speakers off my Rotel receiver or processor?

Can I connect my computer to my Rotel system for audio?

How can I stream music from services such as Pandora, Tidal or Spotify to my Rotel system?