How do you access the internet? Ethernet? Wifi? If it's ethernet, it should just work. Wifi is another story... You may need to connect via ethernet to get initial internet to do some updating, download the drivers your card may need, etc.
The easiest way to add media is to copy it to your mp3's to the "music" folder in your home directory and reboot. nGhost should see them next time it comes up.
The CD/DVD buttons don't do anything in that version. You are not doing anything wrong there.
Did you by chance watch the "geek my ride" LinuxICE walk-through? It covers some of the troubles you are experiencing.