$ sudo apt-get remove audio-mixer

Uninstall audio-mixer including dependent package

If you would like to remove audio-mixer and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove audio-mixer

Use Purging audio-mixer

If you use with purge options to audio-mixer package all the configuration and dependent packages will be removed.

$ sudo apt-get purge audio-mixer

If you use purge options along with auto remove, will be removed everything regarding the package, It's really useful when you want to reinstall again.

$ sudo apt-get purge --auto-remove audio-mixer

See Also,