SizzlingKeys is a Mac program designed to help you control the music being played within the iTunes app. This utility comes as an alternative to switching back and forth between what you're working on and iTunes to change the song, pause the music, and much more.
The application offers you an extensive list of defined global hotkeys which you can configure according to your requirements by entering the preferred shortcut keys for each iTunes function (play, pause, next, etc.). You can always suspend any SizzlingKeys activity from its main window and resume it once you wish to resume iTunes music control.
Another advantage of this app is that it lets you define global hotkeys for system functions like Sleep, Lock, etc.
This program isn't free though. You need to upgrade the app in order to have access to all of its features (by upgrading the app, you can use global hotkeys that mute system, toggle shuffle mode, etc.). Nevertheless, the acquiring price is very reasonable.
To conclude, SizzlingKeys is a simple yet effective tool that enables you to easily control the way iTunes operates. The application comes with an intuitive interface, lets you define global hotkeys for various iTunes controls, and shows you the current track info.