phonon4qt5-backend-null software package provides multimedia framework from KF5 - null back-end (no real back-end), 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 phonon4qt5-backend-null
phonon4qt5-backend-null is installed in your system.
Make ensure the phonon4qt5-backend-null package were installed using the commands given below,
$ sudo dpkg-query -l | grep phonon4qt5-backend-null *
You will get with phonon4qt5-backend-null package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Sound |
| Package | phonon4qt5-backend-null |
| Version | 4:4.7.1-0ubuntu8 |
| Description | multimedia framework from KF5 - null back-end (no real back-end) |
| Sub Section | Sound |