After purchasing the WD MyWorld edition I’ve tried different ways to stream my music library on my network.
The first solution I’ve found was to use PlugPlayer to play music using the iPhone but the solution worked great but had a big problem: it required to connect the iPhone to my stereo to listen it, so if you play music you cannot, at the same time… well… make a call!
So I moved to another solution, I purchased an Airport Express device, connected it via WiFi to work as a remote speaker and connected it to my main stereo (a Marantz amplifier connected to a pair of Indiana Line speaker). This way you can stream music from your Mac to the main stereo.
Last piece of the puzzle was to install the Apple Remote application on the iPhone so that I can control the iTunes running on the Mac via the iPhone.
Now I’ve what I consider a very well engineered and polished solution: the Mac runs iTunes connecting to the WD music library, stream music on the AirPort Express to play it on the main stereo with a very good quality (thanks to Indiana Line speakers, that are very, very good and not too expensive) and I can control everything from every room of the house using my iPhone.