Premium Hi-Fi questions

[lexbrook]

Hello everyone! So happy to have found this wonderful site. I am a brand new X5 owner (4.4i 2004) and will be picking up my vehicle this afternoon...SOOO excited!!!

My question is about the premium sound system and what this allows me. I have a rear mounted 6-disc CD changer. Does the premium sound include a surround sound environment? Is this what DSP denotes? Can I play surround sound cd's or am I just relegated to regular cd's? I wanted to purchase some new titles for my initial drive and just wanted some info.

If you all don't mind, I'll have many other "newbie" questions in the coming days on all sorts of issues. You guys/gals are SO knowledgeable. I appreciate your advice. Thanks!