I want to shut down my soundcard and enable an extern device?

I want to shut down my soundcard and enable an extern device?

Connect the external audio device to a USB or FireWire port and select that port for input/output in the Sound pane of System Preferences.

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    Then I suggest you read this thread regarding the 30" Apple Cinema Display and that particular message pop up... several possible causes... common denominator, the display.
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    I am asked over and over again if I want to shut down my computer now. No matter how many times I click "cancel" the box returns with the same maddening question. I'm using Lion on a Mac Pro. How can I get this to stop?

    Perhaps the problem is that your Security setting is set to log you out immediately that your Sleep mode activates. And maybe your sleep setting is quite frequent.
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  • Hey, when I shut down the computer and close it before it does so, the...

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    Hi-
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    The light will on the front of the computer will fade in and out indicating sleep mode.
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  • Always wants to shut down on button stuck?

    The "Are you sure you want to shut down?" has started popping up continually.  I hit cancel, and a few seconds later it returns.  The On/Off button on the Mac sticking and the machine thinks I'm doing a forced shut down?  Any ideas?  Not like I can hit it with WD-40!

    This article has a list of Global shortcuts:
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    Check this or maybe the coffee has finally taken it's toll and you might want to take ot in to Apple.
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