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Why do I get error messages in OS X when trying to playback or record audio?

April 26, 2017audio Error Messages playback record

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Why do I get error messages in OS X when trying to playback or record audio?

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• -50 Error in parameter list/not an existing volume/bad positioning/bad drive number • -225 Invalid sample rate • -229 invalid input device reference number. Can usually be resolved simply by visiting the Digital Audio Setup dialog and selecting the appropriate Core Audio Device. Metro 6 requires an audio input device (even for output) to work properly in OS X. This is fixed in 6.0.1 or greater.