So I purchased a Extreme base station and three Airport Express units - with the concept that I could distribute a strong wireless signal all around my house and utilize all three express units for Air Tunes. I struggled for days trying to get all four units configured and "participating in a WDS network" all to no avail - I could not get them all working at the same time no matter what I tried. So I took it into my office and gave them to our IT manager in the hope that he could sort it - so after two weeks of trying he has now also given up! We can get it working as a stand-alone regular wireless network with the three airport express units simply joining the network. However as soon as we try to configure the units as WDS (with the extreme as a base station and the three express units as "remotes") we see to lose one or more of the express units or they all go to the dreaded flashing amber! Has anyone actually had any success configuring a system similar to this AS A WDS, with an extreme as the base and three or more express units acting as remotes - extending the network and allowing wireless clients?? I am about to give up and send the whole lot back!!