Doing the same things over and over is not an option for lazy web users like me. Switching between tabs is easy by using “control + tab” or “control + shift + tab” combinations but most of you would prefer using the mouse in practice.
Firefox 4 will be the most popular browser in a few months (as I hope) and I’d like to see my request in its future add-ons (or extensions). Or is there already one?
Situation:
Lets assume you are listening music in one tab (thesixtyone.com) and on the other hand you are looking for your favorite movies in other tab (imdb.com). You wanted to watch a movie (trailer) but the music is playing so you wouldn’t hear anything. What you would do is either closing other tab or switch to it to pause and come back to the movie. It seems quite easy but repeating that action every time you want to watch something becomes annoying.

My request in idea:
I don’t want to switch to another tab to play/pause the music. Tabs should have play/pause buttons on them so I would spend only one click (kind of an onHover event). Here is the example:

First thing came to my mind:
By using javascript (or anything else), keyboard shortcuts can be manipulated to take actions on webpages. For example most of the music websites using “space” as a play/pause trigger. That play/pause button which tabs will have would trigger “space”. The websites using a specific html meta tag would have that feature. Of course there may be more useful ways to achieve that.
Hope someone comes out with that add-on, I’m looking forward to use it. :)