Install Mplayer Debian Wheezy Backports
Uninstall mplayer
To remove just mplayer package itself from Debian 7 (Wheezy) execute on terminal:
The part of an organisation that is responsible for this activity is called the operations function and every organisation has one as delivery of a product and/or service is the reason for existence. MBA PROJECTS IN OPERATIONS MANAGEMENT Operations management refers to the activities, decisions and responsibilities of managing the resources which are dedicated to the production and delivery of products and services. 
Uninstall mplayer and it's dependent packages
View package lists View the packages in the stable distribution This is the latest official release of the Debian distribution. This is stable and well tested software, which changes only if major security or usability fixes are incorporated.
Installing ffmpeg (all versions) on debian squeeze and newer August 23, 2012 March 12, 2018 Mark Linux There are currently 5 active ffmpeg release versions 0.7.x up to 0.11.x. I want to install nodejs and nodejs-legacy packages available in wheezy-backports (i am running debian wheezy). Wheezy-backports repo is getting removed upon barracuda upgrade.
To remove the mplayer package and any other dependant package which are no longer needed from Debian Wheezy.
Purging mplayer
If you also want to delete configuration and/or data files of mplayer from Debian Wheezy then this will work:
To delete configuration and/or data files of mplayer and it's dependencies from Debian Wheezy then execute:
More information about apt-get remove
Advanced Package Tool, or APT, is a free software user interface that works with core libraries to handle the installation and removal of software on Debian, Ubuntu and other Linux distributions. APT simplifies the process of managing software on Unix-like computer systems by automating the retrieval, configuration and installation of software packages, either from precompiled files or by compiling source code.
apt-get is the command-line tool for handling packages, and may be considered the user's 'back-end' to other tools using the APT library.
apt-get remove is identical to install except that packages are removed instead of installed. Note that removing a package leaves its configuration files on the system. If a plus sign is appended to the package name (with no intervening space), the identified package will be installed instead of removed.