Hello and welcome to LinuxQuestions,
Don't use thread titles like that, it'll only have an negative effect. Use a descriptive title instead. And don't ask for urgent or privileged help, we're all volunteers here putting in our free time.
When you want to install software on Linux you should always use the package manager available since using it will automatically resolve any dependencies you might have. VLC is available from a lot of repositories so don't install it from deb file or source if you don't have an absolute need for it. If you've set up your sources.list correctly and you're in the sudoers list, use:
sudo apt-get update
sudo apt-get install vlc
or as root without sudo.
Installing from deb or source file should only be a last resort if you need for example a version that's not available in any repository.
Looking forward to your participation in the forums. Have fun with Linux.