kaffeine does not recognise cdrom

Binary package hint: kaffeine

absolute novice granny here.Tearing out my grey hair. installed karmic koala 9.10 from downloaded and burned cd, thought I installed the additions needed to play dvd- but now the cdrom is invisible and also- no sound.

I'd be grateful for any advice. Be kind to an old lady. She will knit you some cyber-socks.

  Is there a site with screenshots showing step-by-step stages?I have the handbook 4th edition but more impressed by what I read in the forums.

ProblemType: Bug
Architecture: i386
Date: Fri Jan 22 22:49:06 2010
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/kaffeine
NonfreeKernelModules: nvidia
Package: kaffeine 1.0~pre2-0ubuntu1
ProcEnviron:
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-17.54-generic
SourcePackage: kaffeine
Uname: Linux 2.6.31-17-generic i686
XsessionErrors: (polkit-gnome-authentication-agent-1:2093): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed