Fix the VCD auto play command in Gnome

If you are using Debian or Ubuntu, and installed the Gnome system by default. Your system probably already has Gnome Volume Manager.

The Gnome Volume Manger is a daemon which listens the hardware events (HAL event), and run the user-configurable commands. Basiclly, it do autorun, automount for the hot-plugged devices. In plain English, it run the Multimedia Player or CD Burning software when you put a CD into the cdrom driver.