mpgtx software package provides toolbox to manipulate MPEG files (video, system, and audio), you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install mpgtx
mpgtx is installed in your system.
Make ensure the mpgtx package were installed using the commands given below,
$ sudo dpkg-query -l | grep mpgtx *
You will get with mpgtx package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Sound |
| Package | mpgtx |
| Version | 1.3.1-5 |
| Description | toolbox to manipulate MPEG files (video, system, and audio) |
| Sub Section | Sound |