$ sudo apt-get remove mp3val 

Uninstall mp3val including dependent package

If you would like to remove mp3val and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove mp3val 

Use Purging mp3val

If you use with purge options to mp3val package all the configuration and dependent packages will be removed.

$ sudo apt-get purge mp3val 

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 mp3val 

See Also,