Have my multimedia in browsers, kde recognizes it and media controls work within taskbar preview, notification area and - most important - with the media keys.
Plus: Browsers are more secure and no need for other applications.
Yeah. For a moment I found this interesting but then I remembered that KDE Plasma has perfect integration with all of the streaming services I use through my browser. It seems to just work without any additional software. You can even control media from an Android phone if you have the KDE Connect app installed.
Plus: Browsers are more secure and no need for other applications.