Leopard, iTunes & Airport Express: An unknown error occurred (-3256)

Tue, 27 May 2008 18:07:06 +0000

You may find you get the following problem when trying to stream music to multiple speakers. Streaming to either local computer OR your airport express works, but when you try to stream both, you get an error message that looks like this:

“An error occurred while connecting to the remote speaker ‘speaker_name’. An unknown error occurred (-3256).”

This is most likely caused by a firewall issue. If you’re running Tiger, then there’s a fix here. If, however, you’re running Leopard, then it’s a little different:

Multiple Speakers on Matt Thornton

Leopard, iTunes & Airport Express: An unknown error occurred (-3256)