HT1338 After I upgraded to Mountain Lion, I cannot get my external speakers (Bose) to work on my iMac.  Any help?

After I upgraded to Mountain Lion, I cannot get my external speakers to work (Bose).  What can I do to fix?  They worked fine prior to upgrade.

If you haven't already, go to your Applications folder>System Preferences>"Sound">click on the center tab labelled "Output">highlight your external Bose Speakers in the list by clicking on it>turn up the Volume slider at the bottom of the window.  Hopefully that solves your problem.
Hope this helps

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