14.04 - installed package on offline system

I have two system

A: Ubuntu 14.04 with internet 

B: Ubuntu 14.04 without internet

I have customized and installed missing files and packages on A. Now I need to enable to play .mp3 files on B

How do I do that? overall I want to know

• How to install missing packages, in some zip or any package system?


• How do I distribute the packege or it will done by single command?

UPDATE

I run below command from this answer

dpkg -l | grep "^ii"| awk ' {print $2} ' | xargs sudo apt-get -y install --reinstall --download-only

now what to do?

Please help.