Airport Setup Assistant not working!

[manyak]

hey all,

this is so frustrating...

I have an airport express that I have not used in a year. I'm trying to set it up to connect to my speakers and my airport extreme, but when using the setup assistant I get a message reading "This version of AirPort Setup Assistant cannot set up this AirPort Base Station. Please use the software that came with the base station..."

Only problem is that I don't have the software and I cannot find it online anywhere.

I've been searching for hours and I've rebooted my AirPort express countless times to no avail.

Please help!