Suggestion: Customized desktop notification sounds

There should totally be an option for setting custom notification sounds on the desktop app, like in classic versions of Skype. Custom sounds for both servers and individual users; picking your own notification sounds to differentiate between individual servers and contacts.

Sounds that only you--the person with customized notification sounds--would hear. This would not grant the ability to give other users or servers custom notification sounds audible globally/to all users, which could be abused with extremely loud and/or disturbing audio.

As it stands currently, there's only one default notification sound with no way to customize it. And to be frank, it's generic, bland, and can sometimes be easy to mishear. Allowed file extensions could include .wav, .mp3, .mp4, .m4a, .wma