Editor’s note: The following review is part of Macworld’s Summer of Mac Gems series. Each business day until the middle of August 2008, the Macworld staff will use the Mac Gems blog to briefly cover a favorite free or low-cost program. Visit the Mac Gems homepage for a list of past Mac Gems.

You love your Mac's audio capabilities-so much, in fact, that you've jammed every audio port on your Mac with plugs. Impressive as all these available input and output sources may be, isn't it kind of a bother to constantly hop to the Sound preference pane to switch from one to another?

This can now be filed under “unnecessary,” thanks to Rogue Amoeba’s free SoundSource 2.0. This simple utility adds a menu-bar item that lists all available Input, Output, and System audio options. To make a change, just select the setting you want from the menu