I'm just done creating my wireless speaker system. I wanted to being able to stream my digital music anywhere in the home... in the bedroom, the backyard... even the bathroom!
This system is really portable and you are able to stream music wherever you have a AC outlet.
This is how it works.
Assuming you already have all your music in digital format and you are using iTunes, of course, the rest will be pretty easy.

First of all, you need to buy the Airport Express with AirTunes. This is the "heart" of the system. AirPort Express Base Station, now with 802.11n wireless. you can create a wireless network at home or add it to your existing one. Enjoy your iTunes music library in virtually any room of your house. Play the music from your computer's iTunes library through a set of speakers or stereo in just about any room in your home — wirelessly. The Airport Extreme with Airtunes has a audio aux output. This is the only port you are going to use.

Part 2 is actually selecting up the speakers. Any computer powered speakers will do it. I'm using JBL "Spot" speakers with a subwoofer and 2 side speakers because the sound is awesome. you can see my prior use of the speakers here (for Apartment Therapy's contest) and I bought a second set just for this project.



Where to hide all the components and make it look neat and go with our current decor? We used Kartell Componibili in bright red.
Having the sliding doors (that later will be replaced with black mesh for the speakers) make sense for closing them when not in use and the size was perfect for my JBL speakers.
Since I didn't want to place the speaker on the floor, we found a vintage Bose 901 stand on craigslist for $20. It looks perfect and gives the Componibili a more upscale appeal.



Performance is great. To control everything, in iTunes, you set your speakers as the Airtunes one, then, using the free apple Remote application on your iphone... you can control volume, playlist, forward, etc, etc.... and it even shows the album art on your iphone.




The system proved itself as a total success this past 4th of July BBQ party. We moved the speaker outside for the grilling time and then to the kitchen for prep/cooking and later for the dinning room. I've been rocking internet radio on our bedroom and even the bathroom while taking long, long showers. If you have itunes, this is a must.

Update:

I changed the enclosure of this speaker for better sound and looks, please check it out!

-joel