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A headphone audio fix for the Logitech USB Headset 350
Authored by: victory on Nov 30, '05 04:13:21AM

Well, it seems that the aforementioned fix (i.e. using 10.4's Audio MIDI Setup.app) doesn't *entirely* work. That is, something seems to randomly un-set the 'thru' selection, thereby muting the headset audio at times. Until someone suggests a better solution, here's a hack that seems to work: once you have a proper, working setting with the Audio MIDI setup, prevent it from being changed by locking (write-protecting) the the preference file. (As a warning, doing this may interfere with some other aspect of OSX's audio subsystem if you use the Audio MIDI Setup.app for other things):

1) Get your headset audio working, as previously described.
2) In your local Prefs folder, (~/Library/Preferences/) locate the com.apple.audio.AudioMIDISetup.plist file and LOCK it using the Finder's Get Info dialog.

I'm really unsatisfied with this solution, but for the time being, it seems to do the trick.

BTW, in a somewhat related note: I've found Rogue Amoeba's freeware app SoundSource to be quite useful when switching OSX's audio back and forth between the headset and internal speakers. Beats going to System Preferences -> Sound each time you want to switch.



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