Control sound panel in OS X system settings

[DanThomas]

EDITED: Change the link and comments. Well, pretty-much the entire post.

Try this:

Switch Audio Source

Hey Peter, That's @ComplexPoint's code rather than mine.  I suggest you download and install this command-line tool: AudioSwitcher.zip (107.1 KB) Install it here: /usr/local/bin/ Open a window in the Finder and type ⌘⇧G Paste the path string in the resulting dialog, and hit the GO button. Drag the executable from the archive into that folder – you will be required to enter your password to do so. Then you can run this macro and avoid having to mess with System Events. T…

It's the last post in the topic (or was when I posted this, anyway). It looks like it's probably the best solution, if I read the thread correctly.