> Send MacOSX-admin mailing list submissions to
>
macosx-admin@...
>
> To subscribe or unsubscribe via the World Wide Web, visit
>
http://www.omnigroup.com/mailman/listinfo/macosx-admin> or, via email, send a message with subject or body 'help' to
>
macosx-admin-request@...
>
> You can reach the person managing the list at
>
macosx-admin-owner@...
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of MacOSX-admin digest..."
>
>
> Today's Topics:
>
> 1. Re: Default Sound Output - Lab Environment (Reed Laughlin)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 9 Oct 2009 14:33:15 -0700
> From: Reed Laughlin <
reed.laughlin@...>
> Subject: Re: Default Sound Output - Lab Environment
> To: "Lian, Tian" <
tianlian@...>
> Cc: "Mac OS X Admins \(Omni-group Listserv\)"
> <
macosx-admin@...>
> Message-ID:
> <
7e9aabbd0910091433s3d8122e6qcc272ddde485585@...>
> Content-Type: text/plain; charset=ISO-8859-1
>
> On Tue, Sep 1, 2009 at 8:12 AM, Lian, Tian <
tianlian@...> wrote:
> > Hi,
> >
> > I was wondering whether it was possible to change the default sound
> output for a Mac Pro, for all future users (network login).
> >
> > Basically we have external speakers plugged into the back of our lab
> machines but the default sound for any new lab user is coming out of the
> internal speakers. It would be nice if the line out jack behaved the same
> as the front headphone jack but that is not the case.
> >
> > I've used programs such as Composer and fseventer to track changes to the
> system when a sound output selection is made, and the only file modified is
> the /Library/Preferences/com.apple.audio.SystemSettings.plist. However,
> there's two problems preventing me from just editing the contents of this
> plistt:
> >
> >
> > 1. The plist doesn't appear to be read at login, only written when a
> change is made. Making a change in the sound output reference in the plist
> doesn't reflect in the Sound GUI or in actual performance.
> > 2. The sound output preferences in this plist are by UID's. Which
> means even if I could change the default output in this plist and it were
> read at login, it would only apply to that particular UID and not to future
> lab users.
> >
> > As of now, I've resorted to using Workgroup Manager to initiate a small
> script at first login that opens the System Preferences, selects the sound
> pane, and then the output pane, and then selects the Line out option. While
> this is hideously obtrusive and completely visible to the logged in user, it
> does what we need and only recently started giving problems with the script
> not being able to find System Preferences.app by itself; but that's another
> issue and is still substantially better than plastering signs on the
> computers telling the user how to make the change themselves.
> >
> > So I will ask, is there a more elegant way to change the default sound
> output of a Mac Pro for a lab environment?
> >
>
> There is a command-line tool I saw mentioned on the Mac OS X
> Enterprise mailing list that looks like it would be at least a little
> less user-visible.
>
>
http://code.google.com/p/switchaudio-osx/>
> -Reed
>
>
>
There are a number of references. Google Aggregate Device setup.
