How to Remove Media Players From Ubuntu’s Sound Menu & Add Your Own

Ubuntu’s sound menu contains Rhythmbox by default. Any other media players you install will also appear in the menu, assuming they support the MPRIS2 specification. You can hide media players in the menu or add any application you like.

Media players you add won’t have integrated playback controls, but you can easily launch them from the sound menu. You can add any application’s shortcut to the sound menu, as long as the application has a desktop file.