I think what Arjun is asking about is a way to download the vlc package, store it somewhere else besides the usb stick, and then use that package to install vlc every time. Right?
I think the solution would be the apt-zip. You'll have to install it once with
apt-get install apt-zip
You'll need to run apt-zip-list once. It produces two files. The command line options below will put the two files on your desktop (replace username with your username. See the man page for a summary of what these options do):
apt-zip-list -p vlc --medium=/home/username/Desktop -s
One of the files it produces will be a script. Run the script; it will download vlc and anything needed by vlc. On my computer, running Linux Mint Debian Edition (so I might not have the same version of apt-zip as you), the script put all the downloaded files in a folder called partial. You'll need to keep all of these files, so put them on your hard drive or a second USB stick or something.
Now for the part you'll need to do every time you install vlc:
Open a terminal and cd to wherever you keep the downloaded files, then run
This will install all .deb packages in that folder including VLC.