How does the Airport express work?
@potatis
<"How does the Airport express work, does it need a NAS to play music from if you don't want the computer turned on or can you connect a regular hard drive to it? Or does that require an Airport extreme with the usb port?">
You wouldn't connect a hard drive to it, and you don't need an AirPort Extreme. As newagemac sort of said, you do need an Apple computer (I tried iTunes on a PC and found it clunky). You don't need an Apple TV to play your music.
If you have any kind of Apple laptop, mini etc except very old ones, it comes with iTunes and AirTunes already in it. You never see or need to see AirTunes, it's been buried inside.
Recent Apple computers all have an onboard AirPort Extreme inside the box. When you launch iTunes on your Apple computer, you can choose to play it through the built-in speakers or the headphone jack, or through an AirPort to remote speakers.
In a previous home I had active (i.e. mains or audio amplifier connected) speakers in several rooms, each connected to an AirPort Express. 'twas wonderful, you could hear the music all over the house. I found that you couldn't have more than 3 AirPorts in use at any one time. It was a bit fiddly to initially set up in OSX 10.4 - it was necessary to designate one AirPort as the Master and the rest as Slaves (or something like that) in a Wireless Distribution System -look it up in Wikipedia- all set to the same WiFi channel. The Master was the one connected to Broadband.
Now with OSX 10.6 you don't need to know about WDS, it's very easy to set up, and quite frankly I think it's marvellous.
btw, with this kind of setup you have no use for iPod docked speakers or any such thing (I never have the pod switched on at home, except to connect it to the laptop or mini for syncing updates). Instead, you can have REAL HiFi everywhere.
How does it all work? iTunes manages and plays your music on the hard drive (normally the one on you computer, but you can change iTunes to use another drive), and passes it to AirTunes -as I said, you never see AirTunes- which broadcasts it over a WiFi channel through the onboard AirPort Extreme to your AirPort Expresses.
A long & wordy answer, Potatis, just read the first two paras.
But I'd like to end with a new question: in researching a new tv, concerning the Sony KDL40EX503 I came across this on reevoo:
"I would expect a TV marketted in the UK would support BBC iPlayer and all of the main chennels catch up TV services. The only one supportd is Channel 5's which is proabablythe one most people would have last on their list.
Can anyone confirm this?