adding a cd or dvd does not detect media

[graingert]

When adding a dvd software sources checks the /media/cdrom mount which dvds and cds are no longer mounted to.

They are mounted to /media/[name of image]

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: software-properties-gtk 0.80.9
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic i686
Architecture: i386
Date: Mon Sep 19 12:45:09 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110426)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: software-properties
UpgradeStatus: No upgrade log present (probably fresh install)