This is just the thread I wanted to start :-)
I've been looking at sonos, but I'd like something that hooks into my wider a/v setup. I too already have several existing amps & stereos in the house I'd like to utilize. I'm looking to make the move from WMC & mediabrowser to XBMC in each room. With the XSqueeze addin to XBMC that's got to be one of the best extensible unified interfaces around. Running it on a cheap android device something like a pivos XIOS attached to each amp or tv or stereo would deliver that same glorious experience.
Me personally it's the route I'm going to take with a few of the Sumvision nano slim+ (XIOS equivalent). I'll use the WMC machine as a media hub,or my qnap box I have. When the pvr is sorted I can't see a single interface beating this. I'm sure Sonos or other point solutions may be better or more reliable, but for a single solution, I'd like to know if there is better.
** edit - thought I should add that the nano android devices are cheap too @ less then £80 in the UK.
Sonos does have the unit that can do audio output for preamp, but its pretty pricey in the 300 range for the function of a 60 dollar Roku.
I like XBMC, and as long as you dont mind navigating its menu's to hear what you want to hear, its a good system.