Streaming iTunes to home stereo

Hi all

I would like to stream my iTunes music library from my PC over the home network to my home stereo.

AirPort Express would by a possibility but I prefer a hardware solution - like

- Logitech Wireless DJ Music System
- Pinnacle Soundbrigde
- Squeezebox 3 WLAN from Slim Devices
- Terratec Noxon 2 Audio

The problem is that I can't find exact information about the streaming of in iTunes bought music...

Does someone have appropriate experiences?

Many thanks in advance. - Felix

Windows XP Pro