Ok people,
So I Bought this Mac Mini this week, and this AirPort Express also this week.
Then I downloaded ALL the available updates.
Then I have listened to some music for some time using AirTunes.
Yesterday, the musics started to randomly stop playing in the remote speakers while in the host computer the musics were normal.
Today, I have heard some music by the morning, but now when I just got home I got surprised by this same error -15000.
After checking for more than 2 hours in google, reseting all the other AirPorts I have even to default settings, I decided to post here.
I have no firewalls installed (system is simply turned off).
That IPV6 is off everywhere.
All the other "delete files" stuff I found elsewhere didn't made the trick also.
Now I'm using my computer directly cabled to the AirPort Express (no hubs), and I still got exactly the same error message -15000.
Seriously Apple, what do I do now?
Return all my stuff? Cause I ran out of options.
I would gladly receive some apple tecnician in my home for free, so he can solve this and launch the updates to the world.
Thanks for the help.