I'm not sure of any of the terminology, so I'll have to explain things simply, to make sure you understand what I'm saying.
I'm using Gnome 3, and when I bring the mouse to the bottom right of the screen, a bar pops up, with icons of some things that are running in the background (at the moment, mine has "Update Manager", "Removable Devices", "caffeine-cup").
Is there any way to move these items to the bar at the top of the screen, alongside the icons for volume, network connectivity and universal access (how do I get rid of that btw)?
Yes, there is! :)
Install the extension Status Icon Fixer.
Then go to the extension's file and edit with a text editor.
Or:
Inside
extension.js
you'll find a line likefunction enable() {
.After that line, add a line with what you want to be on the top bar:
Remove
audacious
and put what you want.Another example: