Xubuntu 12.04 LTS incorporated many changes, including changes to the default shortcuts. The Pulseaudio volume control (pavucontrol) was introduced as replacement for xfce4-mixer. Along with the 12.04 release, the new Xubuntu logo saw daylight.
This release has reached End of Life
The downloads are listed here only for archival purposes. Running this release is not recommended under any circumstances.
I understand and accept the risks
The above link will redirect you to old-releases.ubuntu.com, where you will have to navigate to the correct release manually. You have been warned.
