Multi-room music systems?

[Arpegius]

Hey all,
I've been asked to spec my dad a multi room music system for his office and was wondering if anyone knew of some good systems. At the moment, I'm not too sure about budget but I'd like to hear all the options. I've come across the SONOS wireless system which looks pretty cool but is expensive: http://www.a3-digital.com/index.asp
If you know of any other systems, could you let me know? There aren't many requirements apart from the office is pretty big so would need multiple speakers. Wires aren't really a problem so fire away. Would prefer something that streamed digital music (from mp3 or similar) rather than CD but open to suggestions.
Cheers

 

[Arpegius]

He isnt after a multi speaker system in one room, therefore other than signal degradation between rooms it is still Hi-Fi.

Im going to have to ask you this - do you have the faintest idea what you are on about?

I do not like the Linn sound - should I go to Linn for my multi-room system?

Yeah, you've got it. I'm after a multi room system not a multi speaker system for one room. I think I've complicated it more than necessary now...
I've also looked at the Yamaha system and that seems to look quite nice although I think it's a bit older than the Sonos one I mentioned. Anyone have any experiences with either?