I got my Airport Express last 10 August (thanks to friend Kenneth, who bought it from Singapore at about P4,800). Unfortunately, our lousy SmartBro is still down and no one has come to fix it!
Anyway, the router is still useful -- I plugged in our USB printer (Canon S600) and it worked smoothly.
I just had to realize that I needed to choose the wireless printer from the printer menu of my application (the default was the printer plugged directly to my Macbook, which did not work of course).
Then I plugged in the speakers and played music from iTunes wirelessly! Airport Express was very easy to set up (in fact, being techie only made it harder for me because I had too many preconceived notions).